It hasn't taken long for Chelsea to make their mark in the January transfer window.
The Blues announced the signing of Christian Pulisic from Borussia Dortmund on Wednesday.
The two clubs have agreed on a fee of £58 million, with the American winger officially joining Chelsea in the summer.
The 20-year-old is highly rated and it has been believed that Liverpool, Arsenal and Tottenham were also interested in signing him.
However, it was Chelsea who won the race for his signature.
Pulisic, who has scored 15 times in 115 appearances for Dortmund, is now the eighth player Chelsea have signed from a German club in the Premier League era.
But what happened to the other seven?
Sebastian Kneißl - Signed from Frankfurt in 2000
Kneißl became the first player to sign for Chelsea from the Bundlesliga, joining for a free transfer from Frankfurt in 2000.
However, he would never make an appearance for Chelsea's first team.
He left for SV Wacker Burghausen in 2005, before moving to Fortuna Düsseldorf two years later.
Kneißl then returned to English football briefly with AFC Wimbledon, before retiring with SV Heimstetten in 2013.
Michael Ballack - Signed from Bayern Munich in 2006
Ballack is undoubtedly the best signing Chelsea have made from the Bundesliga.
Joining just before his 30th birthday in 2006, Ballack would score 25 times in 166 appearances.
He left in 2010 to rejoin Leverkusen, retiring with the club two years later.
Khalid Boulahrouz - Signed from Hamburg in 2006
Boulahrouz never quite made his mark at Chelsea.
He would sign in 2006 but would make only 20 appearances for the Blues.
Boulahrouz left in 2008 and went on to play for Stuttgart, Sporting CP, Brondby and Feyenoord.
Claudio Pizarro - Signed from Bayern Munich in 2007
Another who flattered to deceive.
Pizarro lasted just one season at Chelsea, scoring twice in 32 appearances in the 2007/08 season.
He left for Werder Breman, where he would have great success, before joining Bayern Munich in 2012.
Now 40 years old, Pizarro is still going strong in his fourth stint with Werder Breman.
Marko Marin - Signed from Werder Breman in 2009
Yet another poor signing.
He would play just 16 times and be sent out on loan on four separate occasions during his stint with the Blues.
He left permanently for Olympiacos and currently turns out for Red Star Belgrade.
André Schürrle - Signed from Bayer Leverkusen in 2013
Schurrle was decent during his spell at Chelsea but only lasted two seasons at the club.
The German winger left for Wolfsburg in a £22 million move in 2016.
He earned a move to Borussia Dortmund a year later and is currently on loan at Fulham.
Baba Rahman - Signed from FC Augsburg in 2016
Baba Rahman was signed in £14 million as a 21-year-old and was expected to be one for the future.
However, he failed to establish himself in the first team, making just 23 appearances in his first season at the club.
He is still at Chelsea but has spent the last three seasons on loan at Schalke 04.
Pulisic will be hoping to follow in the footsteps of Ballack, but not the other six names...