The 25-year-old, who has been Arsenal's top scorer this campaign with 15 goals and five assists in 34 appearances, will require surgery in the coming days, with his recovery expected to extend into pre-season for the 2025-26 campaign.
The injury occurred last week during a training session, and Arsenal confirmed the extent of the damage after specialist reviews. "We can confirm that Kai Havertz has sustained a hamstring injury during a training session in Dubai last week," the club said in a statement. "Subsequent assessments and specialist reviews have confirmed that the injury will require surgery, which will take place in the coming days.
"Soon after surgery, Kai will begin his recovery and rehabilitation programme, which is expected to extend into pre-season preparations for next season. Everyone at the club is fully focused on supporting Kai to ensure he is back to full fitness as soon as possible."
Havertz's absence leaves Arsenal in a deepening striker crisis, with manager Mikel Arteta already grappling with a lengthy injury list. Striker Gabriel Jesus has undergone surgery for an anterior cruciate ligament (ACL) injury, while star forward Bukayo Saka had surgery on a hamstring injury sustained in December.
Adding to the woes, Gabriel Martinelli injured his hamstring in Arsenal's recent Carabao Cup semi-final defeat to Newcastle and is expected to be sidelined for more than a month.
Arteta, who is likely to face questions about Havertz's injury at Friday's press conference ahead of Arsenal's clash with Leicester City on Saturday, has been left with limited options up front. The club were unable to bolster their attacking ranks in the January transfer window, with an offer for Aston Villa's Ollie Watkins rejected.
Rumours linking Arsenal to Newcastle's Alexander Isak, Wolves' Matheus Cunha, Leipzig's Benjamin Sesko, and Brighton's Evan Ferguson also failed to materialise. Arteta expressed his frustration at the lack of signings, saying, "I was disappointed with the lack of activity."
The absence of Havertz, who has been a key figure in Arsenal's attack, is a significant blow to their hopes of challenging for silverware. Criticism had already been mounting before these injuries, with pundits and fans alike arguing that Arsenal needed a reliable striker to maintain their push for trophies.
Last week, Arteta had suggested Havertz might need to play every game for the rest of the season, with wingers Leandro Trossard, Raheem Sterling, and Ethan Nwaneri as his only alternatives up front.