That is two deals done by the Lilywhites with more to follow ahead of the return to pre-season training on July 1.
The transfer window is yet to spring fully into life in the Championship, with more talk than deals in general but that should change in the next couple of weeks.
Here is a round-up of all the transfer talk and rumours in the Championship.
5. Cardiff snap-up Gunners defender
Cardiff City have signed Arsenal defender Mark McGuinness. He was on loan at Ipswich last season. (Cardiff website)
6. Blackburn midfielder attracts attention
Corry Evans, who is leaving Blackburn at the end of his contract, is interesting Cardiff and Stoke. (Wales Online)
7. Hull CIty look at Gillingham winger
Hull City are the latest Championship club to look at Gillingham winger Jordan Graham. (Hull Daily Mail)
Photo: Tony Johnson
8. Posh eye defender
Peterborough are interested in Rangers defender George Edmundson who was on loan at Derby last season. (Daily Record)