Manchester United have agreed to pay Ajax up to 67 million euros (£57 million) for Argentina central defender Lisandro Martinez.
The 24-year-old is expected to sign a five-year contract with a one-year extension option.
The move, for an initial £49 million, is subject to a medical, personal terms, and a UK visa.
Martinez’s former clubs will receive £2.2 million in solidarity payments in addition to the £8.5 million in add-ons.
He made 120 appearances for Ajax after joining from Defensa y Justicia in Argentina for £6.3 million in 2019. He also played for Newell’s Old Boys.
Martinez has seven Argentina caps since making his senior debut in March 2019.
He is United’s third summer signing after Tyrell Malacia joined from Feyenoord and Christian Eriksen moved on a free transfer.
Martinez played for Ajax under new United manager Erik ten Hag, where he won the Eredivisie title in 2021 and 2022, as well as the Dutch Cup in 2021.
He was also named Ajax’s 2021-22 player of the year.