Wesley Sneijder struck the only goal of the game to earn Galatasaray a 1-0 friendly win over his old club Inter on Sunday.
The Netherlands international spent four years at the Serie A club between 2009 and 2013, winning the treble of league, Coppa Italia and Champions League under Jose Mourinho in 2010.
And it was Sneijder's effort that ensured Inter coach Roberto Mancini endured a losing return to Gala, whom he managed during the 2013-14 campaign.
Sneijder was set up by Lukas Podolski - who spent the second half of last season on loan at Inter - as the visitors fell to their fourth successive pre-season defeat, all without scoring.
Stevan Jovetic, fresh from completing a move from Manchester City, made his Inter debut as a second-half substitute, but the Montenegro international was unable to conjure up a response for his new employers.
Inter still have three weeks until their Serie A campaign gets under way, while Gala's season begins in earnest next weekend, when they face Bursaspor in the Turkish Super Cup.
