Arsenal have reportedly been given a major boost ahead of Sunday afternoon's north London derby against Tottenham, with four recently injured stars spotted back with the squad.

The Gunners can extend their lead at the top of the table to six points with a victory at the Emirates after Man City were beaten 2-1 by Newcastle on Saturday night.
And, as Mikel Arteta's side embarked on a pre-match walk ahead of kick off, Martin Odegaard, Riccardo Calafiori, Noni Madueke and Gabriel Martinelli were seen with their team-mates, according to The Athletic.
It came as the players left their Islington hotel and although the presence of the quartet is not a guarantee of inclusion, it is a welcome sign for Arteta.
Madueke hasn't played since he suffered a knee injury against Man City in September, while Odegaard and Martinelli have been missing since October.
Calafiori has started every Premier League game this season but he missed both of Italy's games during the November international break - and returned to Arsenal early - as he attempted to manage a reported ongoing hip issue.

However, Viktor Gyokers and Kai Havertz were not seen with the Gunners squad, suggesting they are not yet ready to return to action.
Arsenal will be without Gabriel Magalhaes though, after the titanic centre back picked up a thigh injury for Brazil last week.
Speaking at his pre-match press conference, Arteta gave an update on the situation.
'Yeah, he picked up an injury with the national team, and he's going to be out for weeks,' the Spaniard said.
'We need to have another scan, I think, it is next Wednesday, and we'll have a timeline, probably, much more clear at that moment.
He added: 'It's clearly a blow. It's our leader in our backline.
'To miss him is never a positive thing. The good thing is we have some very good options. They need to stand up now.'
Piero Hincapie or Cristhian Mosquera are likely to deputise for Gabriel during his absence.
Elsewhere, Gabriel Jesus continues to build up his fitness on his return from a serious knee injury.

The forward has been spotted in Arsenal training, but he is not expected to return for at least a few weeks.
Germany boss Julian Nagelsmann also revealed that Havertz had suffered a setback when speaking over the international break, and the former Chelsea star is now likely to return next month.
'Kai (Havertz) had a minor relapse,' he said. 'But overall he’s doing well.'
Tottenham did receive a boost in the build-up to Sunday's clash with Randal Kolo Muani, Lucas Bergvall, Pape Matar Sarr and Mohammed Kudus all expected to return to action, although Thomas Frank does still face a lengthy injury list.
The likes of James Maddison, Dominic Solanke, Dejan Kulusevski and Radu Dragusin are among the stars who are still absent.
