Preston hope to sign midfielder Liam Miller this week. Free agent Miller, 28, was released by QPR at the end of last season and has also attracted interest from Scottish clubs.
The Ireland international has kept his place in Giovanni Trapattoni's squad despite being without a club.
Gianni Paladini to QPR Report: "I would like to thank you for all your time and efforts that you put into QPR. I think you are doing something useful and informative for the club and the supporters."