Here are the top transfer-related stories in Sunday's newspapers...
Atletico Madrid forward Antoine Griezmann, 26, will only join United if Jose Mourinho's side qualify for the Champions League. (Sunday Mirror)
Other reports suggest Atletico are planning to stop any move for the Frenchman by offering the France international a significant increase, while pushing his release clause above the current 100m euros figure. (Sunday Times)
Arsenal manager Arsene Wenger has a warning for Spurs: their policy of paying their stars considerably less than players at rival clubs will catch them out in the end.