Chelsea play Mourinho’s former club Porto today looking to put Premier League woes aside by reaching the Champions League knockout stages.
Mourinho was subject to the first managerial vote of confidence of Roman Abramovich’s 12-year ownership on October 5, but fortunes have hardly improved since.
The defending Barclays Premier League champions are 14th after eight defeats, including at home to newly-promoted Bournemouth last Saturday.
“This is not a one-man responsibility,” Mourinho said.
“There are no ifs. Wins, draw, or lose. I am an optimistic guy. There are no ifs.
“I did lots of good things in this club for the owner to know the quality I have. And if the owner shows me that belief twice – one when he brought me back to the club, the second time when he gave me a new contract, for four years – I don’t think the owner is a person to change with the wind.
“I know the wind with the results is an important wind. I know this wind is really strong, because the results in the Premier League are really bad, but I think the owner knows who I am, what I gave to the club and the owner believes I am the right person to do the job.