Manchester City have accepted an undisclosed bid from Middlesbrough for French centre-half Sylvain Distin.
The 28-year-old has rejected an offer to extend his stay with City and Distin will fall out of contract next summer.
Distin joined City in the summer of 2002 for £4million from Paris St Germain, having impressed while on loan at Newcastle United during the 2001-02 campaign.
In total he made 163 appearances for the Citizens, scoring just four times.
Boro have been keen to land a central defender ever since Gareth Southgate moved upstairs to become manager at the Riverside, having seen an earlier deal to sign Chelsea's Robert Huth fall through.