On the other hand, United are also in talks to snap up Lammens from Belgian side Royal Antwerp, making an improved offer of £20 million (€23m/$27m). The Athletic, though, claim Antwerp are standing firm on their €25m valuation for the 23-year-old. In what could be a big twist to this transfer saga, Fabrizio Romano further added Villa have formally approached Antwerp in an attempt to sign Lammens, while Porto and Portuguese international goalkeeper Diogo Costa remains an option.