Licha hasn't featured for United since March but, along with Marcus Rashford, was pictured back in training with Erik ten Hag's team earlier this week.
Erik said on Friday in his press conference that the game against the Gunners would be too soon for the Argentina international to make his return but, given our injury issues in defence, Webber believes Martinez could well end up being named in the United starting XI on Sunday afternoon.
The former Reds striker has tipped Ten Hag to make four changes to the team that was beaten at Crystal Palace on Monday and has also predicted the first goalscorer, Man of the Match and result against the Gunners - you can do the same by playing our United Predictions game.