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Paris Saint-Germain's Luis Enrique and Arsenal coach Mikel Arteta ahead of the Champions League final.[AFP]

Arsenal coach Mikel Arteta and his Champions League final adversary, Paris Saint-Germain's Luis Enrique, share roots in Barcelona and an obsession with excellence, as their friendship turns to rivalry.

Tomorrow's battle in Budapest sets these two former teammates, and disciples of departing Manchester City coach Pep Guardiola, on a collision course.

"Pep has been a reference for all of us who want to play football in a certain way," said Luis Enrique, who followed in the Catalan tactician's footsteps by coaching Barca.