Millwall have re-signed midfielder George Saville from Middlesbrough for an undisclosed fee while striker Benik Afobe has joined on loan from Stoke.
He scored 12 goals in 118 appearances for Boro having initially joined them on loan from Millwall in 2018.
Former Wolves and Bournemouth player Afobe, 28, spent last season on loan at Turkish club Trabzonspor.
Lions boss Gary Rowett brought Afobe to Stoke, where he has nine goals since joining in 2018 from Wolves.
"I've followed the club for the last few years and I know they've got a good changing room," Afobe said.