Doncaster have made forward Dany N'Guessan their sixth summer signing.
Tottenham have confirmed that Romanian defender Vlad Chiriches has completed a move to Napoli.
The 37-year-old, who has also featured for Newcastle and Sunderland in the north east, will go straight into Boro's squad for the clash with Bolton on Saturday.
The Republic of Ireland international has not featured for Villa since January.
Should he play at the weekend, it would be Given's 600th club game.