Leeds United boss Marcelo Bielsa has lavished praise on his Arsenal counterpart Mikel Arteta, saying he sees things in the Gunners that he has never witnessed before.
The Gunners travel to Elland Road to take on newly promoted Leeds in the Premier League on Sunday, and Bielsa is expecting a tough test.
Bielsa has proved throughout his managerial career that he is a student of the game, and is fastidious in his approach to matches.
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As such, it is no surprise he has been forensic in his preparations for Arsenal, and he has been impressed with what he has seen from a tactical standpoint.