Arsene Wenger may be facing a few struggles ahead of the new Premier League season, but Mesut Ozil has returned to provide a welcome boost to Arsenal.

The playmaker was on an extended break following Germany's Euro 2016 semi-final run, but was on hand to watch the Gunners beat Chivas 3-1 in California last night.

Ozil signed autographs for fans and happily posed for photos with the Gunners' U.S. supporters, and posted a message on Instagram that he will 'be back in training soon' as the Gunners prepare for their opening game of the season against Liverpool on August 14.

The next stage of Arsenal's pre-season tour sees the Gunners head to Scandinavia, with a match against Viking in Norway on August 5 followed up by a clash against Pep Guardiola's Manchester City in Sweden two days later.

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Wenger is targeting a centre-back and a striker in the transfer window following Per Mertesacker's knee injury, although the Gunners boss may consider playing Rob Holding against Liverpool after the defender impressed with a goal against Chivas.

Fellow centre-backs Laurent Koscielny and Gabriel are still on holiday after their respective Euro 2016 and Copa America exploits, while Aaron Ramsey and Alexis Sanchez have returned to training for the Gunners.

Meanwhile, Wenger has confirmed that midfielder Santi Cazorla is not likely to be fully fit for the meeting with Liverpool, saying: "He is our technical security in midfield and we missed him for five or six months last season.

"At the moment he is not completely there on the fitness front. That’s why I took him off at half-time.

Arsenal away and third kit launch in LA 7 show all Arsenal away and third kit launch in LA 1/7 Gathering Arsenal fans keenly wait for the launch of the new away and third kits in LA. Ari Perilstein/Getty Images for PUMA 2/7 Stars out in force Actor Shemar Moore poses ahead of the kit launch. Ari Perilstein/Getty Images for PUMA 3/7 Laughs Hector Bellerin, Santi Cazorla and Nacho Monreal enjoy a joke on stage. David Price/Arsenal FC via Getty Images 4/7 Questions Former Arsenal star Freddie Ljungberg gives an interview. David Price/Arsenal FC via Getty Images 5/7 Star-studded event Arsenal held a big launch for their away and third kits... David Price/Arsenal FC via Getty Images 6/7 Big-name attendees ...which was attended by actor Jamie Foxx. Ari Perilstein/Getty Images for PUMA 7/7 Poses The Arsenal players along with Freddie Ljungberg and Jamie Foxx show off the Gunners' new strips. Ari Perilstein/Getty Images for PUMA 1/7 Gathering Arsenal fans keenly wait for the launch of the new away and third kits in LA. Ari Perilstein/Getty Images for PUMA 2/7 Stars out in force Actor Shemar Moore poses ahead of the kit launch. Ari Perilstein/Getty Images for PUMA 3/7 Laughs Hector Bellerin, Santi Cazorla and Nacho Monreal enjoy a joke on stage. David Price/Arsenal FC via Getty Images 4/7 Questions Former Arsenal star Freddie Ljungberg gives an interview. David Price/Arsenal FC via Getty Images 5/7 Star-studded event Arsenal held a big launch for their away and third kits... David Price/Arsenal FC via Getty Images 6/7 Big-name attendees ...which was attended by actor Jamie Foxx. Ari Perilstein/Getty Images for PUMA 7/7 Poses The Arsenal players along with Freddie Ljungberg and Jamie Foxx show off the Gunners' new strips. Ari Perilstein/Getty Images for PUMA

"He’s a bit behind the others physically but I think he will be alright.

"Maybe not on August 15th, but at the end of August he should be alright."