Nemanja Matic signed for Chelsea from Benfica in January 2014 having previously represented the Blues after joining from MSK Kosice in 2009.
During his initial spell at the club, he made three substitute appearances during 2009/10 season. His debut arrived when he was 21, during a 4-0 league victory against Wolverhampton Wanderers, and he also featured in our final-day 8-0 win over Wigan Athletic in 2010 which saw us clinch the title.
In August 2010, he went on a season-long loan to Vitesse Arnhem to gain more first-team experience and although the transfer to Benfica was agreed mid-season, Vitesse retained his services for the remainder of that campaign.
The 6ft 4in, left-footed player made his debut for the Portuguese club as a late substitute in a 2-1 win over Vitoria Guimaraes at the start of the 2011/12 campaign, and with the benefit of regular first-team appearances, his game matured.
Composed, comfortable in possession and with a good range of passing, he scored his first goal for the Lisbon club during a 4-1 win against Vitoria Setubal in January 2012, and acquired valuable Champions League experience, including games against Chelsea in both legs of the quarter-final on our way to winning the competition.
While his first season at the club was a solid one, the 2012/13 campaign saw Matic flourish. With Javi Garcia departing for Manchester City, he became a formidable presence in the centre of midfield, impressing to such an extent he was named Portuguese Player of the Month on three occasions.
He also added more goals to his game and a stunning volley in a 2-2 draw against Porto was this week voted second in FIFA's Puskas Award for the best goal scored anywhere in the world in 2013. He also netted the winner as Benfica beat Bayer Leverkusen in the second leg of their round of 32 Europa League clash.
Matic played in all but one of Benfica's matches as they progressed to last season's Europa League final, where they were beaten by Chelsea in Amsterdam.
They were also pipped to the Portuguese title by Porto, with a solitary point separating the two big rivals, but on a personal note, the season ended in a memorable manner for the Serbian when he was named Primeira Liga Player of the Year.
His final appearance for Benfica came in a 2-0 win over Porto.
Matic has earned international recognition with Serbia at youth and Under-21 level, and with the senior team for whom he has made nine appearances, the most recent a World Cup qualifier in October 2013.
Having returned to the club, Matic made his debut in the 1-0 FA Cup fourth round win over Stoke City, but it was his display in the 1-0 Premier League win at Manchester City which really caught the eye, with the Serbian driving us on from midfield, while he also struck the bar with a stunning long-range strike.