The Premier League's biggest clubs are chasing Newcastle United midfielder Bruno Guimaraes for the summer market.
The Brazil international's contract carries a 100m buyout clause.
AS says Manchester City are already in contact with Guimaraes' representatives as they look to trigger his release option.
Manchester United are expected to come in for the Newcastle midfielder, with Dan Ashworth to leave the Magpies to become sporting director at Old Trafford.
Also set to join the battle are Chelsea and Liverpool.