Manchester United will have to pay an extra £10m premium to sign Joe Hart.
According to a report in The Mirror, Manchester City won’t stand in the way of Hart moving to Old Trafford but the fee will shoot up from £20m to £30 for that deal.
Manchester will be the centre of a number of deals this summer with rumours emerging that a deal could be struck between the two clubs.
Hart is currently on loan at Torino but City will look for a permanent transfer deal in the summer with no way back for the England keeper under Pep Guardiola at the Etihad.
United are expecting a serious bid from Real Madrid for David de Gea and are looking at alternative options to take over in goal.
Jan Oblak of Atletico Madrid appears to be the favourite to but the prospect of Hart switching from City to United is also under discussion.