Diogo Costa is confirmed to be the subject of advanced talks between Aston Villa and Porto, who are negotiating terms ahead of a possible transfer. The goalkeeper has long been on the radar of Aston Villa, who see him as the perfect addition to their squad as they look to strengthen a key area of the pitch. Progress on talks has been made, though a final agreement is not yet in place and other clubs are said to be weighing-up whether to join the race for his signature. Aston Villa are still pushing to finalise terms. However, Galatasaray are still watching closely and may return with offers of their own. Aston Villa's back line has been a real strength this season, conceding just 1.0 goals per game (6 in 6). Diogo Costa would be expected to slot into that unit and hold his own in an already solid setup. Porto continue to be linked with Kenneth Taylor, Piero Hincapie and Pablo Rosario while Aston Villa are also rumoured to be tracking Maximilian Beier, Adrien Rabiot and Lucas Paqueta. Stay tuned to PlayerSwitch for up-to-the-minute football transfer rumours and news from your club and beyond.