Sam Allardyce has told Sunderland’s official site that he was hugely disappointed after missing out on Davide Santon.
Santon was all set to sign for Sunderland, but the deal fell through at the last minute.
It means that Sunderland still have not brought in a player this summer, and Allardyce was regretful at missing out on the right-back.
"It’s a huge disappointment for me, that I’ve only just overcome, that we weren’t able to clinch the Davide Santon deal, just a couple of days ago," Allardyce said.
Sunderland are currently short of options at right-back, following the expiration of Tottenham Hotspur defender DeAndre Yedlin’s loan spell.
Yedlin was Sunderland’s first choice at right-back last term, but it remains to be seen whether the North East club will look to bring him back to the Stadium of Light this summer.
Billy Jones is currently Sunderland’s only senior right-back in their squad, with Allardyce determined to strengthen in this area before the season starts.
Santon, meanwhile, now looks set to move elsewhere - with Inter Milan seemingly willing to sell the Italian.
Santon made just 13 appearances for Inter last season, and he appears to have little future with the Serie A giants.