Manchester United are eager to use the sale of Chris Smalling to boost their plans to land Porto fullback Alex Telles.
United remain in talks with Roma over a price for Smalling, with the English giants wanting €20m to sell.
United manager Ole Gunnar Solskjaer is eager to see a deal done, with the money to be put towards signing Telles.
Telles and United have already settled on personal terms, though Porto are attempting to hike up his price.
United rate the left-back at €15m, while Porto are demanding €20m to sell.