Manchester United are eager to sign left-back Jorge Salinas from Racing Santander this summer transfer window.
The Red Devils want Lewis Hall to fill their problem position, but Newcastle United are reluctant to sell the 21-year-old.
However, according to Sport, Man United have now settled on Salinas as their Plan B.
The Premier League club will have to battle Barcelona for the 19-year-old’s signature.
Meanwhile, in another development, Arsenal are interested in signing Cristian Romero from Tottenham Hotspur, according to The Athletic.
However, it will be difficult for Tottenham to sell the centre-back to their London rivals.
Spurs are expected to sell Romero this summer, but an overseas buyer is deemed more likely.
Romero has also been linked with Inter Milan and Atletico Madrid.