Giorgos Giakoumakis during his Atlanta United initiation Group 28 Get the latest Celtic news sent straight to your inbox with our daily newsletter Invalid email Something went wrong, please try again later. Sign Up No thanks, close We use your sign-up to provide content in the ways you've consented to and improve our understanding of you. This means that we may include adverts from us and third parties based on our knowledge of you. We also may change the frequency you receive our emails from us in order to keep you up to date and give you the best relevant information possible. As always you can unsubscribe at any time. More info Group 28 Thank you for subscribing! We have more newsletters Show Me No thanks, close See our Privacy Notice Former Celtic striker Giorgos Giakoumakis has finally kickstarted his post Parkhead career after linking up with his Atlanta United teammates for the first training session. The Greek star left Ange Postecoglou's champions following 18 months in the Scottish Premiership, but depute leaving Glasgow's east end last move he he missed his chance to debut last weekend as Atlanta United won 2-1 against San Jose Earthquakes in their Major League Soccer opener due to his visa not being approved. The towering frontman was not even able to train with his teammates before the permit was green lit - but could make his debut in the clash with Toronto on Sunday. Giakoumakis received his initiation from his new squad during his first session as he ran a bizarre gauntlet of punches before starting training. The smiling striker appeared to take the strange ritual in his stride as he laughed off the prods from teammates and coaching staff. Read More Related Articles Ally McCoist rinses Chris Sutton as Rangers hero blasts 'Lincoln post match drivel' amid Celtic Treble caution Read More Related Articles The 4 missed Rangers transfer opportunities named as Aaron Mooy's Celtic resurgence leaves Ibrox hero shaking his head Manager Gonzalo Pineda had said ahead of Giakoumakis return to America, with the striker leaving the country as he waited for his visa, he was optimistic of an impending debut. He said: "We are hopeful that we may have some good news. He is out of the country, we need to see how the travel is, how he feels in general and we make a decision from there. " Follow Record Sport on Twitter , Facebook and Instagram for all of the up-to-the minute breaking news, video and audio on the SPFL, the Scotland national team and beyond. You can also follow our dedicated Rangers and Celtic podcast pages and sign up to our newsletters to make sure you never miss a beat throughout the season. READ NEXT Read More Related Articles Mikey Johnston offered shot at Celtic redemption by Ange Postecoglou as Ireland call sparks 'another level' hope Read More Related Articles Freddie Woodman shuts out Rangers transfer noise as Preston goalkeeper hints summer decision is already made Read More Related Articles Thomas Frank slams FA over Ivan Toney betting ban as Brentford boss questions football's gambling 'influence' Read More Related Articles New Celtic special kit 'leaked' as old school style and eye-catching badge have fans drooling Read More Related Articles Gabby Agbonlahor ranks Rangers vs Celtic 'biggest in Britain' as Villa hero reckons derbies down south are too friendly Story Saved You can find this story in My Bookmarks. Or by navigating to the user icon in the top right. Follow Daily Record Facebook Twitter Comment More On Celtic FC Giorgos Giakoumakis Major League Soccer Scottish Premiership Ange Postecoglou.