Odsonne Edouard is close to completing a £15m move to Crystal Palace from Celtic, who hope to sign Giorgos Giakoumakis from VVV-Venlo.
Greece striker Giakoumakis was top scorer in last season's Eredivisie with 26 goals as VVV-Venlo were relegated.
The 26-year-old has scored once in six appearances for his country.
France Under-21 international Edouard has netted 88 goals in 179 appearances since joining Celtic from Paris St-Germain, initially on loan, in 2017.
He formalised a move to Glasgow for a club record fee in excess of £8m in 2018 and has won three Scottish Premiership titles and four domestic cups with Celtic.