Puskas Award Winner Miroslav Stoch is not the only youngster Chelsea should regret letting go in recent seasons.
Another name to add to the list is Nemanja Matic, a Serbian who has a thumping volley to match Stoch's masterpiece.
Matic is not a name which many affecionados of the Premier League will recall; he made just two substitute appearances in the league in the 2009-10 season.
The central midfielder was signed from Kosice in 2009 for just £1.5 million, but failed to make the breakthrough; after those two brief showing he was loaned out to Vitesse Arnhem in 2010-11.
Midway through that season Chelsea agreed to transfer him to Benfica as part of the deal which saw them sign David Luiz and also part with £25 million.
Benfica allowed him to finish his loan at Vitesse, and he has been worth the wait; the signing is today looking like a very shrewd pick-up.
Matic yesterday renewed his contract at Benfica until 2018, with the club inserting a 45 million Euro release clause into his deal. It previously stood at 15 million Euros, the rise illustration of his increasing importance to the side.
The 24-year-old is by trade a defensive midfielder, who for argument's sake would potentially be a better option right now for Chelsea than Jon Obi Mikel and Oriol Romeu when fit.
His first season for the club last season he played 30 times, and this campaign he has made 20 appearances so far, including five out of six Champions League matches.
He scored his second goal of the season at the weekend, and it was a real cracker. It even had David Luiz roaring with approval on Twitter, praising the quality of the strike.
Watching it, and looking at the Serbian's progression, it's hard to believe he would have got the opportunities he craved at Chelsea, but if they could bring him back easily now, you bet they would strongly consider it.
For 45 million Euros though, you can count it out. Benfica have done well to recognise his performances and up his contract. Look out for the name, because Matic has plenty more to offer.
Watch his wondergoal below...
Would you take Matic back at Chelsea if it were possible?
image: © Crystian Cruz