Arsenal striker Thierry Henry has been given a 50/50 chance of lining up against Manchester United on Sunday afternoon.

The Gunners frontman, 34, pulled his calf in training on Tuesday and will face a late fitness test to determine whether he will face Sir Alex Ferguson's side.

Arsenal boss Arsene Wenger had reportedly been preparing to pair Henry with Premier League top scorer Robin van Persie, but the French striker is a serious doubt for the clash.

Henry rejoined Arsenal on loan from New York Red Bulls in January.