This summer Chelsea managed to get the majority of their transfer targets with relative ease, but the one player they did miss out on was Tiago.
Tiago spent a season at Chelsea in 2004-05 under Jose Mourinho and the Portuguese boss is believed to be an admirer of the way the midfielder has developed since leaving the club.
He has spent time at Lyon and Juventus and is now a regular in the Atletico Madrid side that won La Liga and made the Champions League final last season.
But his contract expired at the end of last season and Chelsea were quick to swoop, seeing him as a cheap way to enforce their midfield before the season began.
But Tiago rejected the deal, instead deciding to sign a new two-year contract at Atletico.
"The summer was very difficult.
"I want to explain to the fans what happened but there are some things I cannot explain because they are not important.
"At the end of last season, I received a great offer (from Chelsea) and it made me think about making a change.
"But I realised that the most important thing was to feel important at a club."
And Atletico fans are certainly glad he decided to stick around. He has been one of their most in form players this season, continuing to age well.
Now the midfielder has been speaking about the current season with Los Colchoneros and he does not seem to be regretting his decision one bit.
He has told Spanish press this week, as translated by Inside Spanish Football:
“I’m good. I’ve been lucky enough to return to the national team and I’m very much enjoying the minutes I’m getting. I feel like a kid. When things are going well on the pitch, I feel very well.”
Certainly no regrets then and Chelsea are also flying, seems like this was the best move for both parties in the end.