By Arsenal correspondent Tony Hughes

Laurent Koscielny will undergo a fitness test tomorrow ahead of Arsenal’s clash against Watford on Saturday.

As revealed by Football Insider on Tuesday, the defender has made a good recovery from the hamstring injury he sustained at the start of the month and is hopeful of playing when Arsenal take on mighty Bayern Munich in next week’s Champions League showdown.

Arsene Wenger revealed today at his weekly media briefing that Koscielny is in contention to play against Watford despite ruling him out for “three weeks” a fortnight ago.

“Koscielny faces a fitness test,” said Wenger. “We have three players that could come back.” The other two are midfield duo Mikel Arteta and Mathieu Flamini.

Koscielny suffered a hamstring injury in the Gunners’ 3-2 defeat against Olympiakos on 29 September but is making smooth progress in his recovery.

In Koscielny’s absence, Wenger recalled Per Mertesacker for the 3-0 Premier League win over Manchester United before the international break.

Arsenal, Arsene Wenger

The German has slipped down the Arsenal centre-back pecking order this season following the emergence of Gabriel, who has become Wenger’s preferred partner for Koscielny.

In addition to the Koscielny injury, Wenger gave updates on the recoveries of long-term absentees Jack Wilshere and Danny Welbeck.

He said: ““Jack Wilshere is still at least one month away. Danny Welbeck, earliest, beginning of January.”