Chelsea manager Roberto Di Matteo has described new signing Eden Hazard as a "fantastic player" but warned supporters to be mindful of the midfielder's young age.
Hazard, who had been linked with moves to Tottenham Hotspur, Manchester United and Manchester City, finally put an end to months of speculation when he completed his move from Lille to Stamford Bridge last month.
"Eden Hazard is a wonderful and fantastic player," said Di Matteo. "He is young and has already achieved a lot.
"He has been named Player of the Season twice in France with Lille. But we shouldn't forget he is still young, he is only 21.
"He is a very exciting player and can bring a lot of creativity to our team."
Hazard has been capped 28 times at senior international level by Belgium, scoring two goals.