He indeed rejoined the Basque team in August 2011, at the Vuelta a Burgos.
The Basque team won 2-0 and Celta de Vigo was instead relegated.
He closes his career in the Basque teams in minor categories.
Athletic were not the only Basque team represented in the 1920 squad.
Mutiu left for Real Sociedad, in 1996-97 but, after a solid first campaign, struggled mightily to hold down a regular place with the Basque team.
The season is the sixteenth for the unofficial Basque national team.
His best result for the Basque team was winning the mountains competition in the 2005 Euskal Bizikleta.
He featured heavily during this spell, but the Basque team failed to achieve a top flight return.
All his other 12 appearances in the season were starts, as the Basque team narrowly avoided relegation.
In July 2007 Larrea returned to the Basque team - now in the second level.