As Barcelona prepare to take on Chelsea at Stamford Bridge, one name is on everybody's lips, Lionel Messi.
The Argentine is widely regarded as the best player in the world and has consistently improved with Pep Guardiola at the helm, scoring 201 goals in 210 matches under the Spaniard.
Messi made his debut in 2004 against Espanyol aged just 17 years old, under Frank Rijkaard. He then went on to score 42 goals in 110 official matches with the Dutchman as boss.
Guardiola took over from Rijkaard in 2008-09 and proceeded to position Messi higher up the pitch. This change saw the Barça forward score 38 goals in 51 games. The following season, he hit 47 goals in 53 matches. The 24-year-old netted 53 goals in 55 games last season, and has a tally of 63 goals in 51 matches this season.
Messi has already broken Barcelona's 60-year-old goal-scoring record surpassing Cesar Rodriguez who scored 232 goals for the Catalan club during the 1940s and 50s.
With eight matches remaining in the season, nine should they beat Chelsea and make the Champions League final, Messi needs only five goals to surpass Gerd Müller's historic record for most goals in a season, set at 67 in 1972-73.
Chelsea face the difficult task of stopping Barcelona, and Messi in particular, from getting on the score sheet, something which hasn't been done since A.C. Milan held the Catalan club to a 0-0 draw at the San Siro.
Messi is the top scorer in the Champions League with 14 goals and is set to top the goal-scoring list for the fourth consecutive season.