Arsene Wenger has responded to a taunt from Jose Mourinho by insisting he was being honest when he said striker Alexandre Lacazette would not be fit to face Manchester United.

Lacazette surprisingly started and played the full 90 minutes in the 3-1 loss to United on Saturday, scoring Arsenal's goal in the second half, despite Wenger having ruled him out with a groin injury three days earlier.

Mourinho aimed a dig at Wenger and Manchester City manager Pep Guardiola ahead of this weekend's Manchester derby by repeatedly saying he was telling "the truth" about his team news with "no stories of Lacazette or [David] Silva."

When told of Mourinho's jibe, Wenger said he had not misled anyone intentionally.

"I thought he wouldn't play. In the end, he could play. What did you want me to do, leave him at home?" Wenger told a news conference ahead of Thursday's Europa League game against BATE Borisov.

"I'm always [honest]. I thought really that he wouldn't play, that's what I had been told. After, he had a test on Friday morning and went to the game. We weren't sure he would play but he tried and he played, that's part of football."

Wenger has all of his regular Europa League squad available for the BATE game, which is essentially meaningless for Arsenal as they have already clinched the group win, though their opponents can still seal second spot.