Monaco played down speculation regarding an apparent attempt to appoint Chelsea manager Jose Mourinho as its new coach.

Minority shareholder Alessandro Proto appeared to confirm in a statement on Wednesday (AEDT) that Monaco had made a bid to bring the Portuguese to the principality, only to be thwarted by his extravagant price tag.

The Chelsea boss has come under pressure after a dismal start to his side's Premier League title defence with Proto revealing the "exaggerated figure" meant Mourinho was no longer a viable option.

Proto's statement attracted plenty of attention in England and France but Monaco urged caution in dealing with the comments.

"AS Monaco would invite the media to not repeat extravagant and unsubstantiated rumours from a supposedly minority shareholder," read a post via the club's Twitter account.

Chelsea's poor start to the season has led to reports suggesting Mourinho's time at Stamford Bridge could be set to draw to a close in the coming weeks.

However, Mourinho and captain John Terry remained defiant in a news conference on Wednesday (AEDT), Terry stating: "The players are 100 per cent behind the manager. We are together."