Leicester City manager Claudio Ranieri has expressed fears that winger Riyad Mahrez is being distracted by constant reports linking him with a move away from the King Power Stadium.
The Algeria international shone for the surprise Premier League champions last season, contributing 17 goals and 11 assists on his way to the PFA Player of the Year award.
Ranieri told reporters at a press conference: "Maybe Riyad is distracted a bit by all of these rumours and speculation. But that is also an experience for my players.
"It is important that he understands that he should stay with us. He has to improve his fitness and play for the team as well as last season."
Mahrez's current contract runs up until June 2019, with Arsenal and Chelsea said to be interested in the former Le Havre man.