Belgian international Kevin De Bruyne was allowed to leave by Jose Mourinho without ever showing what he was capable of and he may yet give the Special One some nightmares.
The 23-year-old joined Chelsea in January 2012 for a fee of around £7 million but he was farmed out to Genk and Werder Bremen before being allowed to leave at the start of 2014.
While Chelsea made a tidy profit, selling De Bruyne for £18 million, he may yet prove to be worth more than that.
The talented midfielder scored twice to help his side win 4-2. His first was a very neatly taken goal after running on to a through ball, cutting inside and beating the goalkeeper. The second was a well-taken strike when the ball was pulled back in the box.
If De Bruyne can continue his current form, he may yet make Chelsea fans regret his departure.
De Bruyne's First Goal v Krasnodar:
De Bruyne's Second Goal v Krasnodar: