Rangers star Graham Dorrans was allegedly 'bottled' during a night out while on holiday in Ibiza.
A video has emerged on social media appearing to show the aftermath of the attack on the 32-year-old, who can be seen on the floor holding his head as he receives medical treatment.
Dorrans is in the Spanish holiday island with his wife Yvonne as well as Rangers team-mate Ryan Jack and his other half Ashleigh.
The quartet were pictured poolside soaking up the Ibiza sunshine at the Ocean Beach Club on a Twitter picture posted by Ashleigh and captioned 'Jack/Dorrans take Ibiza.'
Outraged Rangers fans took to Twitter after pictures and video of the aftermath of the attack emerged on Thursday night.
A caption posted with the video read: 'Dorrans been bottled in Ibiza, scumbags man.'
Twitter user Mackenzie303 claimed the player had been punched and banged his head on the floor.
They wrote: 'He wasn't bottled... he got hooked and went down and hit his head off the deck... someone he was with chucked the glass/bottle.'
One supporter, @IbroxLoyal wrote: 'Graham Dorrans viciously assaulted while holidaying in Ibiza. Taken to hospital. Absolutely sickening, hope the scum that did this are caught. A genuinely nice guy.'
Another, @John_Evans7 tweeted: 'Absolute scumbags whoever attacked Graham Dorrans.'
@debiwatt75 said: 'Disgusting that players can't go on holiday with their families without getting attacked!... hope Graham Dorrans is ok.'
@ElShaarawy7979 said: 'Met Graham Dorrans a while back, he's such a lovely chap, he certainly doesn't deserve what's happened to him on his holiday. Animals. Absolute scum.'