Southampton boss Ronald Koeman admits the futures of Morgan Schneiderlin and Toby Alderweireld remain unclear.
Midfielder Schneiderlin and defender Alderweireld were standout performers in an impressive season at St Mary's as Saints finished seventh in the Premier League.
However, France international Schneiderlin, who reported back to pre-season training with Southampton on Monday, is a transfer target for Manchester United and although United are yet to make a formal bid for the 25-year-old, Koeman fears he could yet be lured away from the south coast.