41-year-old Idiakez started his career with Sociedad, making over 200 appearances in a 10-year spell with the La Liga club.
After departing the club in 2002, the midfielder remained in Spain for a further two years, before making the switch to England, signing with Derby County. He was named Player of the Season in his first year with the Rams, as the Midlands club failed to achieve promotion in the play-offs. The following year saw Derby narrowly avoid relegation, and he left the club in the summer of 2006, with a tally of 22 goals in 96 games.
A transfer to Southampton followed, and he reached the 2007 play-off semi-finals in the process of making 35 appearances for the Saints, although he missed a crucial penalty against former club Derby to send the Rams through to the final - which they eventually won. The former Spain Under-21 international left the South Coast at the end of the 2007/08 season, spending trial spells with a number of clubs, before retiring and going into management.
He is currently working at the Leicester City academy, but the Daily Mail is reporting that he could be heading back to Sociedad in the coming weeks, with former Manchester United boss David Moyes keen on appointing him as his assistant at the Anoeta Stadium.
The report indicates that Moyes is keen on a Spanish assistant to help with any potential language problems that may arise upon his appointment for La Real.
Sociedad currently sit second-bottom in La Liga, with just two wins from 11 games, and Moyes will be keen to have a winning start to his career in Spain when they face fellow relegation strugglers Deportivo La Coruna on November 22.