Athletic Bilbao is hoping Ander Herrera pushes for a long-term future at Manchester United.
Herrera, 29, is out of contract for Old Trafford this summer.
Has been unable to agree to the government. T
Paris Saint-Germain has been linked with Herrera, who arrived at United in £ 29million deal in 2014.
Has been confident about the situation.
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Herrera 's former club are Fermando Llorente and Bayern Munich' s Javi Martinez.
Athletic president Aitor Elezegi told AS that this is a great opportunity to return to San Mames.
"I hope Javi, Herrera or Llorente would be a generous one."
Martinez, 30, has been linked to £ 17million return to his homeland, after a season where he has always been a first team regular under Bayern boss Niko Kovac.
Tottenham striker Llorente hinted back in January that would like to have a career with his former side, declaring: "It would be nice to retire at Athletic."
Herrera, Martinez and Llorente were all key players in Athletic 2012 2012 Marcelo Bielsa.