Having arrived at Finch Farm early this morning, Gueye has passed his medical and is – as we type – taking the obligatory photos that accompany any new signing.
The Senegal international joined Villa from Lille for £9m last summer.
Gueye made 35 appearances in the Premier League as the Midlands outfit were relegated from England’s top flight for the first time in over 30 years.
The defensive midfielder had initially come through the ranks at Lille, making over 175 appearances and scoring on five occasions.
Gueye won a French league and cup double during his time with the French outfit before his switch to Villa.