Manchester United are watching Porto fullback Alex Sandro. The Daily Mail says United have revived their search for a left-back creating further uncertainty over the long-term future of Patrice Evra.

United scouts watched Porto left-back Alex Sandro in the recent Champions League tie against Malaga and plan to look at others in the position before the season ends.

Brazil international Alex Sandro has six caps and cost Porto £8million from Atletico Paranaense in 2011.

 Is Sandro the player to solve United's left-back problems? Give us your shout below...