The Reds will have Wayne Rooney and Owen Hargreaves back in action for the trip to Lisbon this week.
United have been without Rooney since the opening day of the season when he suffered a metatarsal fracture in his left foot, while Hargreaves has been troubled by a knee injury.
Rooney had been expected to play a part in Saturday's 1-0 win over his former club Everton, but Reds boss Sir Alex opted to rest the 21-year-old striker, who instead trained over the weekend in preparation for Wednesday's visit to Portugal.
"They'll both be ok for Wednesday," Sir Alex told MUTV after the victory at Goodison Park.
"We took medical advice on Wayne and as he had only started training on Monday, we felt that five days' training was maybe a bit short.
"But he trained on Saturday morning, Sunday and he'll train right through until Wednesday. By that point he will definitely be available for the match against Sporting Lisbon."
United have been without Rooney since the opening day of the season when he suffered a metatarsal fracture in his left foot, while Hargreaves has been troubled by a knee injury.
Rooney had been expected to play a part in Saturday's 1-0 win over his former club Everton, but Reds boss Sir Alex opted to rest the 21-year-old striker, who instead trained over the weekend in preparation for Wednesday's visit to Portugal.
"They'll both be ok for Wednesday," Sir Alex told MUTV after the victory at Goodison Park.
"We took medical advice on Wayne and as he had only started training on Monday, we felt that five days' training was maybe a bit short.
"But he trained on Saturday morning, Sunday and he'll train right through until Wednesday. By that point he will definitely be available for the match against Sporting Lisbon."