Henrikh Mkhitaryan, Wayne Rooney and Michael Carrick were spotted arriving for training on Friday, February 17 but are doubts for Manchester United's FA Cup fifth-round trip to Blackburn, The Mirror said.
Rooney and Carrick missed Thursday's Europa League tie against St Etienne with minor muscular injuries, with Mkhitaryan absent from the last-32 first leg through illness.
Centre-back Jones will be hoping to return from a foot injury in time to face his former club, while Luke Shaw is pushing for a chance after being overlooked for United's previous four squads.
Less than 24 hours after the Europa League victory and Jose Mourinho was back at Carrington with his squad, though those involved in Thursday's game were not expected to complete a full session.
Zlatan Ibrahimovic stole the show at Old Trafford, scoring his first hat-trick for the club end then declaring wants to continue being football's Indiana Jones - succeeding wherever he goes.
The 35-year-old has lived up to the hype since arriving at Manchester United in the summer and took his goal tally to 23 in all competitions on Thursday.
United are favourites to win the competition, just as they are for the upcoming EFL Cup final against Southampton, and the veteran Swede is determined to win more silverware.