Man Utd boss Ferguson nervous over Jones scan results
Ferguson is hoping that the versatile former Blackburn man, who was playing at right-back against Reading, will be fit for the second leg against Madrid at Old Trafford on 5 March.
"We'll have to assess him. It's an ankle injury obviously so I'd imagine he'll not be ready for Saturday anyway," Ferguson said.
"But we'll see what he's like after that."