Juventus managing director Giuseppe Marotta has reiterated the club's desire to keep hold of Arturo Vidal.
Bolton have signed defender Quade Taylor who was released by Premier League Crystal Palace at the end of last season.
Papa Bouba Diop has not been offered a contract extension to remain with Birmingham.
The midfielder has been signing one-month deals with the midlands club since first arriving at St Andrew's in October.
He penned his latest one in mid-December having capped his only start for City with a late equaliser to salvage a 2-2 draw against Crystal Palace just days earlier.
But a hamstring injury means he has not featured for Blues since and City boss Lee Clark is unable to offer him another extension due to the cash-strapped club's financial struggles.
Diop, 34, made one start and one substitute appearance for Birmingham.