Frank Lampard's Chelsea will be in South-East London in a few hours time, ahead of their third successive London derby against Crystal Palace.
The Blues are looking to do the double over their opponents the second successive season, following their 2-0 victory in the reverse fixture at Stamford Bridge last November.
Chelsea Vavel looks at five players who have represented both sides.
Current Crystal Palace captain and former Chelsea captain Gary Cahill has enjoyed quite a career, collecting every major trophy available during his time in West London, including the club's first ever Champions League and two Premier League titles.
The 34-year-old joined Chelsea from Bolton Wanderers in January 2012 and became a regular beside legendary captain John Terry for many successful years before taking on the armband himself.
After finding game time difficult to come by under Maurizio Sarri, Cahill joined Palace and has been one of the Eagles top performers this season.
Second only to Lampard in the blues' all-time scoring charts, Tambling is mostly remembered for his 11 years at Chelsea where he made the bulk of his senior appearances and managed 164 goals, but his final appearances in English league football came at Crystal Palace from 1969 to 1974.
The Englishman suffered with injuries during his debut season at Palace, making just three appearances, but in the following three campaigns he made just 73 appearances and scored 17 goals.
While his time at Selhurst Park was far from prolific, the highlight came in a 1971 Italian-Angelo Cup game at the San Siro where his brace helped Palace through to a 2-1 win against Inter Milan.
Chelsea's number 12 was first brought into the senior fold by Jose Mourinho in 2014 and for the next few years started to earn a more sporadic place in the squad, with appearances in cup games and late-on in some league fixtures.
In Antonio Conte's second season, the club and Loftus-Cheek came to the decision to loan the midfielder out so he could gain valuable Premier League experience.
At Crystal-Palace, the 24-year-old made 24 league appearances and his performances earned him his first senior England call-up and his debut against World champions Germany where he was named Man of the Match.
Having recently returned from a long-term injury, and with Chelsea's midfield options weakened by injuries to N'golo Kante and Mateo Kovacic, Loftus-Cheek could be in line for to play against the team that helped him grow.
The eccentric Belgian striker was another Chelsea player loaned out to Crystal Palace, following loan spells at Borussia Dortmund and Valencia.
The 26-year-old joined Chelsea from Marseille in 2016 and famously scored the goal to secure the title against West Brom during Conte's reign.
The following year was tough for Batshuayi, doing well in cup games or when coming off the bench- most notably in the Champions League group stage tie away to Atletico Madrid- but failing to make a significant impression when started in the league.
In January 2018 he was loaned to Dortmund and at the start of the following season he was loaned to Valencia.
After the decision was made to terminate his loan at the Spanish club in January 2019, he joined Palace until the end of the campaign, managing a respectable five league goals from 11 appearances.
Patrick Van Aanholt
Van Aanholt began his football career in Chelsea's academy and made his senior debut in a 2009 FA Cup tie away to Preston North End.
This appearance was one of only two that he made during five years as a blue, spending most of his time on loan from 2009 to 2014.
The full-back joined Sunderland and made 82 appearances during a three-year spell before signing for current club Palace in 2017. Under Roy Hodgson, the Dutchman has become one of the first names on the teamsheet and now has over 100 appearances for the Eagles under his belt as well as 13 goals.