Tony Cascarino believes Alexis Sanchez is a bigger problem for Manchester United than Mesut Ozil is for Arsenal.
Both players are their club’s highest earners but have struggled for form and regular playing time this season.
Sanchez, who swapped Arsenal for United 13 months ago, has netted just four times this term, while Ozil has reportedly been told by Gunners boss Unai Emery he can leave the club.
Speaking on talkSPORT’s Weekend Sports Breakfast on Saturday, former Chelsea striker Cascarino said: “Alexis has been missing for 18 months as a player since the final year of his contract at Arsenal.
“The summer before last, what happened to him with Chile and the manager, questions were being raised about him, his fitness and condition and the temperament of this particular player.
“There are massive challenges at Man United and he’s their highest earner.
“Alexis Sanchez is a bigger problem for Man United than Ozil is for Arsenal.”
Sanchez and Ozil are believed to be earning close to £500,000-a-week and £350,000-a-week, respectively.
The Chilean struggled to make an impact when he replaced the injured Jesse Lingard in United’s 2-0 Champions League last-16 first leg defeat to Paris Saint-Germain on Tuesday.
Meanwhile, illness sidelined Ozil for Arsenal’s 2-1 win at Huddersfield last weekend and he was left out of the squad for their shock Europa League last-32 first leg loss to Bate Borisov on Thursday.
The German playmaker has missed 20 games in all competitions due to injury, form and illness this season.
And former Arsenal defender Martin Keown questioned Ozil’s absence in Belarus earlier this week.
He told BT Sport: “Is he injured? Is he ill? One thing as a player you’ve got to be is available for selection and you want to give consistency. He hasn’t been able to give either of those.
“He’s got to work to get back into the team. That is what the manager is asking for, that is what he has to do.
“It is becoming embarrassing the Ozil situation. No [Aaron] Ramsey of course as well. Him not being part of the future is hard to take.”