Gabriel Jesus’ knee injury is “not looking good”, Arsenal manager Mikel Arteta says. The Brazil striker was taken off after 40 minutes in Arsenal’s FA Cup loss to Manchester United on Sunday.

Arsenal forward Gabriel Jesus suffers suspected ACL injury during FA Cup defeat to Man Utd; Jesus had scored six goals across his last seven appearances; Mikel Arteta says Arsenal actively looking to improve squad in January;

Granted, the clash with Arsenal was also a high-profile game and so, as Bruno Fernandes suggested after the draw with Liverpool, the real litmus test will come at home to bottom side Southampton. But United's ability to dig in and their refusal to collapse after conceding an equaliser when down to ten men cannot be ignored.