Casemiro was reportedly hurt by Erik ten Hag's decision to leave him out of the FA Cup final.
The Brazilian was initially named on the bench for Saturday's 2-1 win over Manchester City but was replaced by 19-year-old Willy Kambwala.
Erik ten Hag said that the midfielder was not 100 per cent fit for the match, although ESPN Brazil disputed this.
GOAL reports that Casemiro was hurt by the decision to exclude him from the squad for the final, according to their sources close to him.
Casemiro had started 10 consecutive games depsite a difficult run of form, filling in at centre-back, but Lisandro Martinez and Raphael Varane returned as a pairing for the final.
There are doubts over Casemiro's future at Old Trafford after a drop-off in form this season.
Three Saudi Arabian sides - Al-Nassr, Al-Ahli, and Al-Qasidiya - are all interested in him, GOAL reports, with the latter two the most keen.
They will also reportedly be willing to offer him a better package than the £350,000-per-week that he earns at United.
He appeared to miss the celebrations that his team-mates enjoyed after beating City, instead being pictured on social media jetting off on holiday with his family.
Casemiro's wife Anna Mariana shared a photo of the couple on a flight with their two children, Sara and Caio.
Anna Mariana, who married Casemiro back in 2014, captioned the photo 'gone on vacation'.
Missing out on the FA Cup final represented a disappointing end to the season for him.
The 32-year-old has struggled this season following an excellent first campaign following his move to United from Real Madrid.
Despite featuring in 32 matches - scoring five goals and contributing three assists - Casemiro has faced criticism for his sluggish displays.
He fired back at his critics in an interview with Sky Sports earlier this month.
Casemiro said: 'I was considered one of the best signings of the Premier League last season, and now I'm not worth anything anymore?
'The criticism is disrespectful. So when it's lacking respect, then it's worrying, and I don't have to respect that either'.
He slotted in at centre-half in a number of games towards the end of the season amid a defensive injury crisis for Erik ten Hag.
Adeyemi83
0
That was why you didn’t wait for the FA cup party?
Keeaeknp
0
i was equally disappointed
Yewdeirtz
0
You are a fool if you believe what this guy post Casemiro was referring to the pundits
kbsarpong
0
ETH most leave man United his too Arrogance to his players.
see another mumu guy. in his absence, did the team win or not? I wonder where some of you lay your heads if you go to your bedroom to sleep
kbsarpong
0
... and Amrabat did well deputizing for him. and to the brasil ESPN, it is not always everything that coaches bring out of their camps to the public domain. What ETH said was good in order not to destabilize the camp.
PrinceAbobyBlinkz
0
Thank God he didn't Play the match if not united would have lost
dodemnrz
0
ETH most leave man United his too Arrogance to his players.
foybklnrsy
0
why did i said man utd a “ flop club” and “they can’t handle star players”? see what happened to pogba, sancho, alexis sanchez, they are already a star player before joining man utd and ended up being flop. there are still more. man utd only can handle young players that didn’t being so famous yet, like hojlund, garnacho, rashford, that’s what i mean.
you just spoke trash
KIINGKREZZ
0
just sell him off buy thirsty young players and pay them less 350k
Facts. Say it louder Bro
KIINGKREZZ
1
It worked out for the whole team which includes him. You see this is what causes a problem in the locker and within the team it gives the media a bone to chew on and than Ten Hag is under fire. This is the same scenario as Sancho. Sir Alex wouldnt allow this social media talk if you have something to say say it to the coach simple as that
SandiRagtag
0
if he play the results might far be different. something like 3-0 or 5-1 city win.
Woobekosty
1
atleast ETH did wat fans wanted to drop casemiro... and the result was good
Zeubklmrsy
0
But can win a trophy under pressure with their being flop abi, fake fan of football.
why did i said man utd a “ flop club” and “they can’t handle star players”? see what happened to pogba, sancho, alexis sanchez, they are already a star player before joining man utd and ended up being flop. there are still more. man utd only can handle young players that didn’t being so famous yet, like hojlund, garnacho, rashford, that’s what i mean.
Zeubklmrsy
0
But can win a trophy under pressure with their being flop abi, fake fan of football.
a real football fan didn’t judge things just based on stats and trophies only. if you are really a football fan you should know how bad man utd is. yes they won the fa cup, congratulations 👏🏼but did you even watch how they played all the season? i would say arsenal is better as a team even they didn’t won any. im a real football fan, even im a liverpool fan, but if man utd is good i would say they are good. if liverpool bad, i would say liverpool is bad. speak facts only 🫰🏼
Nundiktuz
3
just sell him off buy thirsty young players and pay them less 350k
whoknows
1
didnt they say he was injuried?! pretty sure they reported he got injuried on warmup or smt?
Alopenu
0
but ten hag I don't know if in his head is full of water were can you find a normal parents hating their children
Stop saying trash 🗑️ and also like by yourself. Anything decision Ten Hag made for that FA cup final really work for good. Beside the news was that Casemiro was injured and not fully fit. Thank God we won the FA cup at last, that's the most important thing.
zadbdinrsu
0
This app is famous because of Man united news
true and Saudi pro league
kuabcnop
2
the problem is not Casemiro but the team,there are games he played in Madrid as a backup centre back and fits in well
soplrstyz
0
casemiro is not a flop. man utd is a flop club. anyone who joined man utd would flop. they can’t handle star players.
Still feeling the pains
soplrstyz
4
This app is famous because of Man united news
Muubceikru
1
casemiro is not a flop. man utd is a flop club. anyone who joined man utd would flop. they can’t handle star players.
But can win a trophy under pressure with their being flop abi, fake fan of football.
Mayhem87
2
who cares about your stupid feelings, you would've destroy us in the game nonetheless
patikstuy
1
leave
wioiorsyz
4
Ten hag had make the correct decision
Vanclmrty
4
You just want to make news by writing his name, otherwise everything is fine 🤏🤏
maodeikry
2
but ten hag I don't know if in his head is full of water were can you find a normal parents hating their children
tummnpuz
1
who said casemiro wasn't there for celebration? you guys mind Wat u publish
Olilatonny95
2
AFB give out evidence.... Casemiro got the injury during warm up and was replaced by Kambwala in the squad 😏
Zeubklmrsy
3
casemiro is not a flop. man utd is a flop club. anyone who joined man utd would flop. they can’t handle star players.