The 21-year-old is regarded as one of Europe’s most highly-rated youngsters and is expected to leave the Spanish side this summer.
Laporte signed a new contract with the club last summer, but AS reports that the Basque club expects the Frenchman to leave.
Laporte reportedly has a €50million buyout clause in his contract and both City and United are prepared to meet that clause.
Barcelona are also reportedly keeping tabs on the defender.
