Arsenal’s worst fears ahead of the North London Derby have come true as Martin Odegaard has suffered an injury. The midfielder started for Norway against Austria on Monday night and everything was going to plan for Stale Solbakken’s side. However, in the second half, Odegaard twisted his ankle and went down in pain. It really did look like a nasty injury and the Gunners skipper left the field almost in tears. Arsenal fans are seriously worried about Odegaard now, as are the club’s medical staff. Arsenal’s doctors are in contact with Norway’s medical team after Martin Odegaard’s injuryOdegaard …