Roma striker Edin Dzeko says playing for Chelsea is a big challenge which is why he turned down the opportunity to join the Blues last January.
The 32-year-old was very close to moving to Stamford Bridge during the winter transfer window but he eventually stayed with the Giallorossi, helping them reach the Champions League semi-final.
"Chelsea is a big challenge and I know what kind of a club that is, I've been at Man City and I wasn't ready to move to Chelsea," he is quoted as saying by the Daily Star.
"Nobody I spoke to wanted me to move to Chelsea so I decided to stay.
"It has been tough period, a lot of stories and information, true and false, were written, everything went through my head, I wasn't clear or certain of anything at the time.
"Now I will play two games for Bosnia and then we'll see [where will I play]. I have another two years of contract, so Roma has to be asked about it too."