Fulham are reportedly interested in signing Marko Grujic, who was Jurgen Klopp's first transfer as Liverpool manager, from Porto.
The Championship winners are believed to have offered €18million (£15.4m) for Grujic, 26. The midfielder has 17 senior caps for Serbia and is set to be part of their squad for this year's World Cup after helping Porto win the Primeira Liga title and League Cup last term.
The Reds signed Grujic, then 19, from Red Star Belgrade for £5.1m in January 2016. Klopp was appointed Liverpool boss just two months earlier, replacing Brendan Rodgers. The youngster was immediately sent back on loan to the Serbian club for the rest of the season.