Manchester City are in talks to sign Athletic Bilbao defender Aymeric Laporte, Sky Sports News understands.
According to Sky in Italy, Pep Guardiola and City are considering paying the £60m needed to trigger the France international's release clause.
City are in the market for a new centre-back in the January window and it is understood negotiations between the two clubs are continuing on Tuesday afternoon.
The 23-year old turned down a move to City when Guardiola first arrived at the club in 2016, and he has reportedly been of interest to a number of top clubs across Europe including Barcelona, Manchester United and Chelsea.
He has emerged as a top target for City, who have also shown interest in West Brom's Jonny Evans, Real Sociedad's Inigo Martinez and Leicester defender Harry Maguire.
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Sky Sports News reported on Monday that Evans, who is also a target for Arsenal, has a release clause of just £3m should the Baggies be relegated.
City have funds in reserve after missing out on Alexis Sanchez, whom they were ready to pay £20m for, to Manchester United this month.