Mason Mount has given Chelsea a panic subsequent to enduring a back injury ahead of their Champions League semi-last second leg against Real Madrid.
The midfielder was in visible discomfort when substituted late on in the 2-0 win against Fulham on Saturday.
The Chelsea manager said: “I hope really that Mason is not a big thing and hopefully he can fully recover for Real Madrid.”
He added: “It was my decision, there was not any doctor or physio who told me to take him off.
“But I saw him landing hard and it was the moment anyway when we wanted to take him off anyway.
“I saw him holding his back slightly, so we didn’t want to take any risks but I have no other information on that. He has the full package, mentally, in terms of talent and physically.
“And the most important part is his character, he has his feet on the ground and he’s a nice guy. He comes to Cobham every day to learn something new and have new experiences.
“He is the guy who can recover very fast, he’s a very physical player and is fully adapted to PL football. He has big self-confidence in a very, very positive way.
“It’s a pleasure to have him, be at his side and guide him and support him. It’s impressive, he’s not affected by all the praise.
“This is maybe the most important part. He seems to be a guy who likes the sport, and feels an obligation to make the most out of it. And he wants it absolutely badly, so it’s a top mix.”