Mauricio confirmed that Harry will be in the squad heading to the Emirates for the 12 noon showdown but revealed that Ben Davies (ankle) and Erik Lamela (hip) are both sidelined alongside Toby Alderweireld (leg) and that Mousa Dembele (ankle) is doubtful.
"Toby is out, Erik Lamela is out and Ben Davies got a big impact with the ball and twisted his ankle," reported Mauricio after training on Friday. "He has some swelling, it’s painful and he’s not available for Sunday."
Mousa had to leave the action with an ankle problem just after the half-hour mark against Bayer Leverkusen on Wednesday. "Mousa is a doubt, we need to assess him tomorrow," added Mauricio.
The manager's problems are compounded by Moussa Sissoko's suspension.
"We have a few problems, but that is football," he said. "Be sure that we’re going to Arsenal to try and win the game. That is our mentality. It’s true we have many players out but we’re confident and we believe in ourselves."