Arteta was back at the Manchester City training ground this morning with the rest of Pep Guardiola's players, including goalkeeper Ederson who was at the centre of a row with United boss Jose Mourinho that sparked a 20-man bust-up.
Arteta was sitting in the driver's seat of a Chevrolet alongside fellow coach Lorenzo Buenaventura, with the Spaniard clearly determined to cover his face.
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He lifted a hand above his eyes where the bottle struck him after the bad blood between the fierce rivals became real.
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Spanish radio station Cadena SER have claimed that Arteta's injury was caused by a bottle thrown by United striker Romelu Lukaku.
Ederson pulled up to training in his 458 Italia red Ferrari and was in the thick of the scrap after full time at Old Trafford hours earlier.
Source: Dailymail