Aaron Ramsey will definitely miss Arsenal's clash with Crystal Palace amid fears he has played his last game for the club.
The Welshman had to be replaced during the first half of the Europa League quarter-final victory over Napoli on Thursday night.
Unai Emery admitted at full-time that he was unsure if Ramsey would play for Arsenal again ahead of his summer move to Juventus .
Arsenal will continue to assess Ramsey over the coming days to determine the extent of his hamstring problem.
But he will definitely not be involved against Palace as Arsenal look to boost their hopes of a top four finish.
Granit Xhaka was also withdrawn in Naples and Arsenal have confirmed he is struggling with a hip problem.
As yet, he has not been ruled out of the clash with Palace while Denis Suarez is another doubt.
The Barcelona loanee has barely featured since his January arrival and a groin injury has kept him out of Arsenal's last two matches.
Unai Emery must again do without defender Sokratis for the visit of Roy Hodgson's men.
The Greek defender serves the second of his two-match suspension, meaning Shkodran Mustafi or Konstantinos Mavropanos is likely to come in.
Arsenal also confirmed long-term injury absentees Hector Bellerin, Danny Welbeck and Rob Holding are all progressing well.
Arsenal go into this weekend's matches in fourth in the Premier League table, level on points with Chelsea , although they do have a game in hand on Maurizio Sarri's side.
The visit of Palace is Arsenal's penultimate home match of the season, having won 14 of their 17 matches at the Emirates to date.
