Chelsea are set to avoid punishment if they field a weakened line-up at Liverpool on Sunday.
The Daily Mail says with the Blues five points adrift of Premier League leaders Liverpool with three games to play, Mourinho wishes to prioritise next Wednesday's semi-final second leg with Atletico Madrid after drawing the first in Spain 0-0 on Tuesday night.
Third-placed Manchester City, who could overhaul Liverpool if Chelsea win and they win their game in-hand, could be angered if Mourinho opts not to utilise his frontline players at Anfield.
But the Blues, who insist they have quality throughout the squad, are not expected to infringe regulations that were relaxed after Blackpool were punished in 2011.
Clubs can select any player in their 25-man squad list without fear of sanction; action would likely only be taken if a number of younger players from outside the list are selected.
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