Mourinho will come up against his former side FC Porto in Chelsea's final Group G clash on Wednesday evening and, despite their poor form, the Portuguese tactician has ruled out the option to partake in the continent's secondary cup competition.
The London side are currently two points away from the Premier League relegation zone - down in 14th spot with 15 points from 15 games - their worst ever start to a season in England's top flight.
With a top four finish looking more and more unlikely as they continue their poor run of form, it was suggested that perhaps Chelsea's best chance of qualifying for next season's Champions League would be to win the Europa League.
However, Mourinho quickly ruled out the option of taking any such route, and insists they can still qualify if they win the competition they are currently still competing in.
"It is not fair for the teams that are in the Europa League to do the group phase then in February to get the teams that are knocked out of the Champions League.
"I think if you are knocked out of the Champions League, you should go home and focus on domestic competitions.
"We want to play Barcelona, Real Madrid, Bayern - we want to play all the big teams and for that we need to win tomorrow."