Former Leyton Orient star Dan Agyei enjoyed a true Turkish delight to end Galatasaray’s 19-match unbeaten league run last weekend.The 28-year-old scored his first Super Lig goal to seal a 1-0 victory for the newly-promoted side against the division’s reigning champions.Agyei’s stunning solo goal snapped Galatasaray’s lengthy unbeaten league runAFPHis heroics earned him a spot in EA Sports’ Team of the WeekGettyGalatasaray, who lost just once in 36 games en route to claiming the title with 95 points last season, have made a similar start to this term.The Istanbul giants are also going strong in the Champions League, having downed English champions Liverpool 1-0 in September.However, ironically, it was a goal from an Englishman that proved the difference when Kocaelispor stunned Galatasaray on Sunday.Just 168 days after he had lined up at Wembley for the League One play-off final, Agyei scored arguably the biggest goal of his career.Having latched onto Serdar Dursun’s flicked header from a goal-kick, the winger cut inside Abdülkerim Bardakci just before half time.The London-born star then fittingly weaved between Arsenal and Tottenham Hotspur expats as a sharp first left Lucas Torreira on the deck.A second later, Davidson Sanchez was powerless to prevent Agyei’s drilled low effort that caught Ugurcan Cakır out at his near post.Liverpool’s conqueror Victor Osimhen thought he’d netted an equaliser for Galatasaray after the break, but it was chalked off for offside, and Kocaelispor held on for a priceless three points.It ensured that Agyei now boasts a match-winning goal against Turkey’s top team in only his fourth start since signing a two-year deal, external with last season’s TFF First League champions.European football expert Andy Brassell told talkSPORT.com that the sky’s the limit should he continue his rich vein of form.View Tweet: https://twitter.com/hashtag/KOCvGS?src=hash&ref_src=twsrc%5EtfwAgyei’s winner helped Kocaelispor up to 11th in the Süper LigGettyAgyei scored 18 goals in 72 appearances for Leyton OrientGettyGalatasaray’s unbeaten run ended“It is an amazing story,” Brassell said. “When you think it’s for Kocaelispor, a team that won the Turkish second tier last season, promoted and the first team to beat Galatasaray this season, it’s an amazing achievement.“Absolutely amazing achievement. A brilliant solo goal from him to win the game as well.“Now, of course, if you think when he came through the AFC Wimbledon academy, very highly rated, bought by Burnley when they were in the Premier League, loaned out a few places, and it’s never quite stuck for him anywhere.“He’s had moments where he scored goals at Leyton Orient, Crewe… But now to find yourself in the Turkish top flight and scoring against one of the better teams in Europe to beat them, it’s an incredible story, really.“So there was a bit of a controversy about Osmihen’s potential equaliser being ruled out late in this, but I think, given the power of the narrative, we probably have to say it’s not such a bad thing.“It’s amazing for him. We’ve seen some English players come over to Turkish football in the last couple of years.The former Oxford United player also made three Premier League appearances for BurnleyGetty View this post on Instagram ‘Absolutely amazing achievement’“And if he does well at Kocaelispor, it’s a really great thing because, as we said, they are back in the top flight, but it’s a club with potential. “They’ve got a big old stadium. It holds like 34,000, 35,000 people.“Obviously, it was packed for this game against Galatasaray.“If he can build on that, well, it’s a really great story, and maybe you can get a move to an even bigger Turkish club off the back of it.”