Borussia Dortmund striker Sebastien Haller has successfully undergone surgery to remove a testicular tumour and will be out of action "for a few months", sporting director Sebastian Kehl has confirmed.
Haller joined Dortmund from Ajax this summer after an incredible season in Amsterdam, but was diagnosed with testicular cancer last week after feeling discomfort during a pre-season training session.
Well wishes have poured in for Haller from around the world of football, and Kehl has now revealed that the Ivory Coast international has successfully undergone a procedure to aid his recovery.
"The operation went very, very well and he is on the right track," he told 1&1.
"He was super stable and incredibly positive and also said to the team: 'Do your job, give everything. Make sure that when I come back we're still in the running.' And the boys will do that too."
When asked about a possible timeline for Haller's return to action, Kehl remarked: "He will definitely be out for a few months."
With the former West Ham frontman sidelined, there has been suggestions that Dortmund could look to bring in another striker this summer.
Haller was signed as a direct replacement for Erling Haaland, who completed a long-awaited move to Manchester City last month, though Dortmund do still have Donyell Malen and Karim Adeyemi available to play down the middle - the latter a signing from RB Salzburg this summer.
Speaking on whether supporters could expect any further incomings this transfer window, Kehl continued: "We are preparing for different scenarios. "Edin, [CEO Hans-Joachim Watzke] and I are talking to the scouting department and working on different options and ideas. Nothing concrete at the moment.
"Nevertheless, Haller is missing the profile. We're working on different options. But we'll only do something if it makes sense in the end."