
Due to the severity of the injury, an operation is required following the immediate treatment in Columbia. This will be performed by a specialist in Madrid by agreement with Bayer 04, Arias and Atlético. The 28-year-old Arias is expected to fly from Colombia to Spain in the middle of next week.
“This serious injury hits us hard and affects everybody. Santiago is a great character and has joined us with great ambition and it’s a bitter blow for him,” declared sporting director Simon Rolfes. “Like Atlético Madrid, we will do everything we can to support Santiago in his recovery. After the operation and his return to Leverkusen, he will be looked after by us during his rehab. Our medical section and the whole club are behind him so that he can return fully fit as soon as possible.”
“I can’t describe how I feel. I’d be lying if I said I’m doing alright but I don’t want to maintain the opposite. I’m sad about the situation,” Arias said on Instagram on Saturday. “This is another test to overcome and it will make me stronger. I promise to work hard to get back quickly and stronger and be able to wear the colours of Colombia and my club Bayer 04 Leverkusen again.”


For the second time in four days, Bayer 04 face Borussia Dortmund this Tuesday evening, 2 December (kick-off: 21:00 CET) - this time in the round of 16 of the DFB Pokal, with more than 7,000 fans supporting the Werkself at Signal Iduna Park. After the recent 2-1 defeat to BVB in the league, several cup stats provide hope of revenge for the Black and Reds. There are several reasons why Bayer 04 recommends getting to the round of 16 clash early, in which VAR will be in use, unlike in the previous rounds. Read on for further information on tonight’s game in our matchday news.
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Just three days on from the Bundesliga meeting in Leverkusen, Bayer 04 now visit Borussia Dortmund in the DFB Pokal on Tuesday (21:00 CET). Ahead of the game at the Signal Iduna Park, head coach Kasper Hjulmand spoke about how to approach this second encounter in 72 hours and a number of developments within the squad.
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Werkself TV shows the highlights of Bayer 04's 2-1 loss to Borussia Dortmund on Matchday 12 of the 2025/26 Bundesliga season...

Bayer 04 were beaten 2-1 at home by Borussia Dortmund on Matchday 12 of the 2025/26 Bundesliga season. Although the Werkself had more of the play in the first half, the visitors went ahead through Aaron Anselmino. Karim Adeyemi doubled their advantage after the hour, but Christian Kofane gave Leverkusen late hope, although ultimately to no avail.
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