The Portuguese champions said earlier that a ₤16.2M was agreed, and Chelsea have officially reaffirmed the move.

"Chelsea Football Club can confirm we have reached agreement with FC Porto for the transfer of Jose Bosingwa," a statement read on Chelsea's site.

"The player is now in England to discuss personal terms and undergo a medical."

Bosingwa was signed by Jose Mourinho in 2003 as he went on to clinch the 2004 UEFA Champions League title plus four Superliga titles with Porto.

The 25-year-old has six caps with Portugal.