The Colombian required treatment after a clash with Nicolas Otamendi in the second half of Sunday’s 2-2 draw with Manchester City at the Emirates and his recovery in time for tomorrow’s game is uncertain, with an abdominal injury further delaying his progress.
Arsene Wenger has already confirmed that Petr Cech has not recovered from the calf strain that ruled him out on Sunday, which means Martinez could be forced to step in at late notice.
The 24-year-old has not played a Premier League game for the Gunners since December 2014 – a 3-2 loss at Stoke – but started all three of Arsenal’s EFL Cup match this season.
Wenger has spoken highly of Martinez in the past, labelling him “the future”. He will need to prove he can be Arsenal’s present as well in a crucial London derby.
Martinez’s return to the side comes at an inopportune moment for Arsenal, who will be without vice-captain Laurent Koscielny for the visit of a West Ham side who terrorised Wenger’s backline last season with aerial bombardments, Andy Carroll scoring a hat-trick in a 3-3 draw at Upton Park.
Twenty-two year-old loanee Matt Macey has also been recalled from his spell at Luton Town and will be on the bench if Ospina fails to recover.