RB Leipzig's Yussuf Poulsen scored a stoppage-time goal to snatch a 3-3 draw against Bundesliga leaders Bayern Munich on Saturday and delay the Bavarians' title celebrations by at least a day.
Barcelona signed Spain star Dani Olmo from RB Leipzig on Friday for a reported 60 million euros ($65 million).
RB Leipzig's Spain international Dani Olmo is leaving after more than four years at the Bundesliga club, the midfielder said on Friday, and is now expected to join Barcelona.
Bundesliga strugglers Wolfsburg appointed former RB Leipzig and Southampton coach Ralph Hasenhuettl on Sunday as Niko Kovac's replacement.
Tottenham winger Timo Werner said on Friday "the fun has completely returned" as a result of his loan move from RB Leipzig in January.
Star midfielder Jude Bellingham became the latest addition to the list, injuring his ankle in Saturday's 4-0 league win over Girona.
Nkunku had already agreed a pre-contract with the Premier League club in December and has now rubber-stamped his move to Stamford Bridge.
Eintracht Frankfurt came from a goal down to book a date with RB Leipzig in the German Cup final with a 3-2 win over Stuttgart on Wednesday.
City are also playing under a cloud after being charged with more than 100 breaches of financial rules by the Premier League
RB Leipzig stuns Bundesliga title hopefuls Borussia Dortmund 1-0 to claim the club's first win in the German top flight.
