Chelsea are a team spoilt for choice, so many of their young talents head out on loan. In fact no club in world football sent more players out on loan last season than Chelsea.
This summer was no different and one man who left temporarily was Czech international defender Tomas Kalas, He joined Bundesliga side 1.FC Koln for the season.
The talented defender had been out on loan before, at perennial Chelsea borrowers Vitesse. But after his impressive Premier League debut last season this one was a surprise.
Kalas was handed a shock start against Liverpool in something of a title decider at the end of last season. In the game he shackled Luis Suarez and the most potent attacking force in the Premier League at the time.
When it was announced that Chelsea would be moving David Luiz on to Paris-Saint Germain Kalas' chances of first-team football at Stamford Bridge appeared to improve again.
But the arrival of Kurt Zouma did not help his cause and he was soon shipped out.
And the loan deal has certainly not gone to plan.
Expected to be a starter, that has not been the case. Kalas has not featured in the Bundesliga and is currently playing for their reserve team in Germany's fourth tier.
Now he has been speaking about his troubles in Germany, admitting that he may have to leave in January:
"I really don’t know what the problem is."
"Koln plays well without me and the manager doesn’t have any reasons why he should change the defenders. But I still hope I will play. If not then a change has to come.
"I am in touch with Chelsea, but I don’t have any exact news about my future. I didn’t know I wouldn’t play. The club came to England in summer and told me they would like to have me there.
"At first they were happy with my performances but then I didn’t play in any game. I don’t know what went wrong.
This is certainly no fate befitting a player of Kalas' obvious talents, so expect him to be on the move in January, perhaps to a Premier League team.