Manchester City manager Pep Guardiola wants Barcelona defender Nelson Samedo at Etihad Stadium.
The report in the Daily Mail claims that Manchester City is understood to be open to a swap deal involving Joao Cancelo, the Portugal international who cost £60million from Juventus last summer.
Cancelo has made just eight Premier League starts and Guardiola believes Walker requires tougher competition at right-back.
Swap deals are expected to become more prevalent once the transfer window re-opens, with Barcelona open to moving on a sizeable number of their current squad.
Semedo moved to the Nou Camp from Benfica, where he had played alongside Bernardo Silva for the club’s B team when the pair were teenagers.
The 26-year-old will become the seventh full-back signed during Guardiola’s reign — at a cost of almost £200m — should City manage to secure his signature amid interest from elsewhere in Europe.