Pep Guardiola says Manchester United "don't have enough money" to tempt top talent away from Bayern Munich.
Sturm Graz have dismissed reports claiming that coach Darko Milanic has been approached by Leeds.
Stoke have completed the signing of England international goalkeeper Jack Butland from Birmingham.
The npower Championship club accepted an undisclosed fee from the Potters for the 19-year-old, with the keeper set to stay at Birmingham on loan until the end of the season.
Butland had earlier rejected talks with Chelsea because of his desire to play regular first-team football and had also been linked with Liverpool, Fulham, Newcastle and Manchester City in this window.