Arsenal midfielder Santi Cazorla has had a setback in his recovery from a long-term knee injury, which could push his return past the end of April, Arsene Wenger says.
Wenger said Cazorla's knee is healing well but that his Achilles tendon has become inflamed during his rehab training.
"Santi is not doing too well, he has some Achilles problems and we have to put him off impact," Wenger said on Tuesday.
Asked if Cazorla could still return in April, the Arsenal boss said: "We have to see now how he responds. He always had a little tendinitis on his Achilles, and we have to see how he responds to that."
Meanwhile, Jack Wilshere -- who has yet to play this season -- is "doing quite well" and will start running outdoors later this week, Wenger said. That means he's about three to four weeks away from a return to the pitch, he added.
Wilshere fractured a bone in his ankle shortly before the season started, but Wenger said he still expects the midfielder to be able to fight for a place in England's squad for the European Championship in France this summer.
Cazorla's setback is the latest injury blow for the Gunners, whose winger Alex Oxlade-Chamberlain has been ruled out for up to eight weeks after injuring his knee in the 2-0 loss to Barcelona last week. Tomas Rosicky is also a long-term absentee with a thigh injury.