Scunthorpe United have signed Yeovil striker Paddy Madden and Doncaster midfielder David Syers for undisclosed fees on two-and-a-half-year contracts.
Madden, 23, scored 23 goals to help the Glovers to promotion to the Championship last season but was placed on the transfer list in November.
Syers, 26, returns after a successful loan period at Glanford Park when he scored five goals in 15 appearances.
The Iron have also signed defender Marcus Williams on an 18-month deal.
The 27-year-old, who had been on loan with the League Two leaders, has been released by Sheffield United.