Chelsea boss Thomas Tuchel admits Toni Rudiger's contract situation is a concern.

The defender's current deal expires at the end of this season.

Tuchel said: "I hope they find a solution but it is not only between coaches and players, and what we wish for.

"It is between the club and the player and the agent.

"He has been excellent, a very consistent player on a high level. He's calm and focused. Everything is in place but sometimes players need a bit longer. It's nothing new from our side."