Reports have claimed that Paris Saint-Germain are keen on signing both players in the summer.
However, Mourinho believes that UEFA's Financial Fair Play rules will prevent the Ligue 1 outfit from splashing out on the duo.
When asked about the reports during Friday's press conference, Mourinho told reporters: "No, it's not irritating. No problem.
"If there is Financial Fair Play, they don't have money to buy them. If there is no Financial Fair Play and they threw something crazy, £300m for both, I think Chelsea has to think about it."
The Blues are currently at the top of the Premier League table with seven games left to play.