Manchester United boss Mourinho goes into Sunday’s Manchester City showdown on a high after masterminding a Champions League victory over Juventus on Wednesday.
Sanchez was seen clutching his thigh as he hobbled off the pitch in Turin, sparking fears he may miss the derby match through injury.
Lukaku, meanwhile, has struggled for Manchester United this season and missed wins over both Juventus and Bournemouth through injury.
Mourinho has now opened up on both players ahead of the derby.
And the United boss insists that they have no injuries from the Juventus match – and that Lukaku may be fit in time for the City encounter.
“No new injures,” Mourinho told MUTV.
“So from Juventus we don’t bring important injuries.
“We have touches but I don’t think any player that was available for Juventus will be out.
“We have a chance – It is Friday morning now – that Lukaku could be back.”