Mikel Arteta promised ruthlessness when he joined Arsenal and Matteo Guendouzi has been treated to nothing less, being forced to train alone as the Gunners look to sell the midfielder, according to reports.

The 21-year-old has earned a reputation as a hot-head after a number of incidents, the most recent a throat-grab on Brighton match winner Neal Maupay after the Gunners' sorry 2-1 defeat to the south-coast side in June. 

Guendouzi avoided a ban from the FA but did not escape Arteta's wrath, with the Spaniard less than impressed with his attitude - dropping the midfielder for every match since. 

The Athletic are reporting that Guendouzi has been exiled from first-team training since the Seagulls defeat, working with a fitness coach alone after he failed to impress in a meeting with  Arteta and technical director Edu.