Jose Mourinho has a rocky relationship with Barcelona - although, it was once very bright.

The legendary manager arrived at the club in the mid-'90s as Bobby Robson's assistant and became a prominent figure.

Mourinho helped with press conferences, helped plan training sessions, and ran players through tactical plans.

He was so key, in fact, that he retained his position there when Louis van Gaal became Barcelona manager in 1997.

And, once again, the manager have Mourinho some extra power; Van Gaal even let Mourinho manage the side in 'lesser' competitions like the Copa Catalunya.

The Portuguese would go on to leave and forge a career in Portugal and later England, of course, but things took a turn in 2008.

Frank Rijkaard left Barcelona that summer and there were two managers up for the role - Mourinho and Pep Guardiola.

Despite believing the job was his, Barca would eventually pass on Mourinho and appoint Guardiola.

He'd then take over at Internazionale and quite famously celebrated in front of the Camp Nou fans after knocking Barca out of the Champions League.

From there it was to Real Madrid and a fiercely intense rivalry with the Catalan side that completely soured relations between Barcelona and their former coach.

But now ex-Barcelona forward Samuel Eto'o - who won the treble under Guardiola before joining Mourinho's Inter - believes he should return to Camp Nou.

"It would be beautiful [if Mourinho returned]," said Eto'o, per Sport. "I'd like to ask Jose to come to Mallorca, that would be good, the best city in Spain. But I'd like him at Barca even more."

That came after Eto'o labelled the ex-Manchester United boss 'one of the best people' in football.

"I'm sick of saying that this guy is one of the best people in the world of football," he said. "I ended my career and the first person to send me a message was this man,

"All the players fought for him, killed for him."