BERLIN (AP) — Bayern Munich succeeded in signing Senegal forward Nicolas Jackson from Chelsea on Monday after an on-off transfer saga.

Jackson arrived in what both clubs described as a season-long loan, giving Bayern backup for Harry Kane and a wider range of tactical options in attack.

Negotiations were widely reported in the British and German media to revolve around an option or conditional obligation to turn the loan into a permanent deal. Neither club immediately confirmed under what conditions Bayern would be expected to buy Jackson.

The deal was reportedly nearly derailed by an injury to Jackson’s Chelsea teammate Liam Delap, which caused coach Enzo Maresca to question whether the team had enough depth.

“Nicolas was immediately keen to play for Bayern, so we’re especially pleased that things have finally worked out,” Max Eberl, Bayern’s board member for sport, said in a statement.

Jackson, who signed a contract extension to 2033 last September, fell out of favor at Chelsea after the offseason signings of strikers Liam Delap and Joao Pedro.

The Senegal striker struggled at times at Stamford Bridge because of his wasteful finishing and disciplinary issues.

Bayern was hoping for a loan signing to add depth to an attack which depends heavily on England captain Kane.

Bayern powerbroker Uli Hoeness last month said the club should make only loan signings for the rest of the transfer window, avoiding any more big-money signings following the arrival of Luis Díaz from Liverpool.

Bayern was left with a slimmer squad and wage bill after the departures of Kingsley Coman, Thomas Müller and Leroy Sané.

Eberl had a frustrating offseason in which he failed to sign Germany players Nick Woltemade or Florian Wirtz from Stuttgart and Bayer Leverkusen, respectively.

Apart from Díaz, Bayern’s only other significant reinforcement in the transfer period was Jonathan Tah’s arrival on a free transfer from Leverkusen.

Bundesliga exodus

The arrival of Jackson — even if he was unwanted at Chelsea — was an eye-catching deal for the Bundesliga at the end of a window where the focus was typically on who was leaving Germany.

Bayer Leverkusen's title-winning team from 2023-24 was almost totally dismantled, while Stuttgart sold Nick Woltemade to Newcastle and Leipzig's Benjamin Sesko left for Manchester United. Leipzig replaced him on Monday with 20-year-old Danish forward Conrad Harder from Sporting Lisbon.

Borussia Dortmund sold Jamie Gittens to Chelsea but made up for it by signing another exciting young English player, Jobe Bellingham.

All change at Leverkusen

It was a summer of upheaval for Leverkusen after seeing star coach Xabi Alonso return to Real Madrid.

Alonso's successor, the former Manchester United manager Erik ten Hag, was fired after just three games in charge on Monday, when there was no immediate word of a successor.

Wirtz moved to Liverpool rather than Bayern, and he was followed by other key players from the 2024 Bundesliga-winning team like Granit Xhaka, Jeremie Frimpong, Amine Adli and Tah. Piero Hincapie joined Arsenal on Monday.

Leverkusen sporting director Simon Rolfes moved to replace them with a host of promising young players including Morocco winger Eliesse Ben Seghir from Monaco, Loïc Badé from Sevilla, Malik Tillman from PSV Eindhoven and Ibrahim Maza from Hertha Berlin, while also signing the likes of Lucas Vázquez from Real Madrid for experience.

The signings continued on Monday with Argentine midfielder Ezequiel Fernández arriving from Saudi Arabia team Al-Qadsiah, while Nigeria forward Victor Boniface was sent to Werder Bremen on loan. Boniface won the Bundesliga with Leverkusen in 2023-24 but the club's statement on the loan suggested he was seen only as backup to Patrik Schick and the 19-year-old new arrival Christian Kofane.

Ten Hag was initially charged with leading the rebuild, but that plan quickly changed.

Other signings

Promoted Hamburger SV signed two midfielders at once from Arsenal, bringing in playmaker Fábio Vieira on loan and Sambi Lokonga on a permanent deal.

After selling Woltemade to Newcastle, Stuttgart on Monday announced Moroccan attacking midfielder Bilal El Khannouss was joining on loan from Leicester City, a day after it said Algerian attacking midfielder Badredine Bouanani was joining from Nice. An attempt to sign South Korea forward Oh Hyeon-gyu from Genk reportedly collapsed.

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AP Sports Writer James Ellingworth in Duesseldorf, Germany, contributed.

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