Italian international prop Martin Castrogiovanni has agreed a transfer from Leicester Tigers to Top 14 leaders Toulon.
The 91-Test cap prop, who is regarded as one of the finest tightheads in the world, will finalise his switch to the French side after the two clubs arrange the finer details.
"I have reached an agreement with Toulon but I still have a year on my contract at Leicester," the 31-year-old told ESPN radio.
"The two clubs are in the process of reaching a deal. In theory, all is sorted out. I should sign next week but I cannot say I am a Toulon player nor that I have left Leicester."
Once in Toulon, "Castro" will compete with former All Black prop Carl Hayman for a place in the starting XV.
Castrogiovanni has has won three Premiership titles since arriving at Leicester in 2006.