John Obi Mikel is not available for Chelsea's game against Hull City at the KC Stadium this Sunday.
Speaking to reporters ahead of this weekend's game, Mourinho confirmed that Chelsea have a clean bill of health apart from the absence of Nigerian international Obi Mikel.
Obi Mikel is recovering from undergoing knee surgery and the Chelsea official website reports that Mourinho expects him to return to training after the upcoming international break.
On his team's fitness before the Hull City game, Mourinho said: "There are little things that stopped a couple of players from training well during the week but I don't think it will stop them from playing."
Despite being well placed at the top of the Premier League table, Mourinho believes the top five still all have a chance of winning the trophy.
"Obviously the fifth and the fourth-placed teams, they have to overcome not one, not two but three other teams so normally you would say the first three [are left in the title race], but the reality is the distances are so short between two and three, three and four and four and five that I look at them and mathematically I see things as open."
Chelsea are currently six points clear at the top of the table, and face a Hull side that have been below-par this season.
With Liverpool and Manchester United playing each other, and Arsenal facing a tricky run-in, it's likely that Manchester City will be Chelsea's most serious rival for the title.
But at this stage in the season, with 10 games left for the Blues, it's very difficult to imagine that anyone will be able to catch them - especially as Mourinho's men no longer have cup concerns after Champions League and FA Cup elimination.
What do you think Chelsea fans - will the Blues be lifting the Premier League title come the end of the season?