The Blues shot stopper Thibaut Courtois is convinced Chelsea can secure the quadruple this season.
With Mourinho's side still in four competitions - the Capital One Cup, the FA Cup, the Champions League, and five points clear at the top of the Premier League - Courtois believes winning all four titles isn’t impossible for the west London club.
'It's difficult to say if we could win all four but we are playing well,' Courtois said. 'We have passed through all competitions.
'Now we are in the semi-final of the Capital One Cup, are top of the league, there is an important game in the FA Cup on Saturday which we have to win and soon we will be playing PSG in the Champions League.
'It will be hard but we have the team that can win everything. It's what we're aiming for.'
'We want to win everything, it will be difficult, but I think we have the team to do it. Hopefully we can achieve it.'