Doncaster have made forward Dany N'Guessan their sixth summer signing.
Shrewsbury have rejected an offer from Burnley for winger Josh Ginnelly.
Ramon Nunez's Leeds contract has been terminated by mutual consent.
Nunez has not played for the club since April and was not given a squad number at the start of the season.
The Honduran midfielder's deal has been scrapped by mutual consent, and he is now free to find another club.
Nunez made 25 appearances in two-and-a-half years with Leeds following a 2010 move from Deportivo Olimpia.