Aston Villa boss Paul Lambert says striker Darren Bent is not for sale ahead of the close of the transfer window.
It is understood Saphir Taider is set to leave Southampton just three weeks after arriving on a season-long loan.
Bolton striker Michael O'Halloran has joined Tranmere on loan until January.
The Scotland Under-21 international has made two first-team appearances for Bolton, whilst also enjoying loan spells at Sheffield United and Carlisle.
O'Halloran's only league start came for the Blades in a 2-2 draw against Stevenage in April.