Sneijder, 29, enjoyed a productive spell under Mourinho during their time together at Inter Milan, but the Dutch international believes that his knowledge of the former Real Madrid boss could lead Galatasaray to victory in their Champions League tie against the Blues.
"Mourinho knows us well and that is an advantage but the same applies for us," he said. "We know Mourinho very well, perhaps better than the Chelsea players know us. Chelsea is a great side, everybody has to accept that, but if we show the same spirit we did against Juventus, we could achieve another big result.
“The way our fans support us when we're on the pitch is a driving force which pushes us to give our best. They are like the 12th man. Our strength is that all our players have very powerful characters. If we really put our heart into what we do and reflect all our quality into the game, play with our strength of character, then there isn't a single team we can't beat."
Sneijder isn't the only Galatasaray star who has worked with Mourinho before, as midfielder Hamit Altintop was signed by 'The Special One' at Real Madrid, and of course striker Didier Drogba enjoyed a hugely prolific spell under Mourinho at Stamford Bridge. Those three stars will be hoping to put one over their former boss, but how much can they really divulge?
The knowledge of Mourinho's style and tactics may come in handy for manager Roberto Mancini, but given Mourinho's stunning record in management, it's unlikely that he's worrying too much about any information his former players may have, as he's proven himself to be an adaptable manager throughout his career, as we saw in Chelsea's recent 1-0 win at Manchester City, where Mourinho's tactics were impeccable.
image: © Patrick de Laive