Fulham are finalising their £6.4m deal for Wolfsburg's Switzerland international right-back Kevin Mbabu.
The 27-year-old had the second part of his Fulham medical in Portugal on Saturday ahead of completing his move.
He is expected to return to London with the rest of the squad on Monday, when they arrive from their pre-season tour of Portugal.
The 27-year-old is entering the final year of his contract and is believed to be in search of a new challenge after joining Wolfsburg from Swiss side Young Boys in 2019.