Hatem Ben Arfa, on a season-long loan at Hull City, admits to having only thought about himself in the past.
Stuttgart concede that keeping Antonio Rudiger will be a struggle, but only intend to do business with a 'big outfit'.
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.