Athletic Bilbao have confirmed the capture of midfielder Benat Etxebarria from Real Betis on a five-year contract.
The 26-year-old began his career with Athletic but made just one senior appearance for the San Mames outfit before being allowed to join Betis' B team.
He was subsequently promoted to club's first team after impressing in Segunda Division B in 2009-10, and has remained a key player ever since.
His impressive performances during Betis' march to UEFA Europa League qualification in 2012-13 have led to a return to the Basque Country.
"Athletic Club and Real Betis communicate that a deal has been reached to transfer Benat Etxebarria to our organisation," a statement from Athletic read.
"The player will sign for five years with Athletic and be officially presented on Thursday, June 27."
Benat scored four goals in 33 Liga starts last term.