ALEXIS SANCHEZ is demanding an incredible £400,000 a week to stay at Arsenal.

Hitman Alexandre Lacazette last night completed a club-record £52million switch from Lyon which will see him earn £150,000 a week.

Yet contract rebel and Manchester City target Sanchez, who has a year left on his current deal, turned down a weekly wage of £275,000 and is holding out for £400k — nearly £21m a year.