Ter Stegen on his upcoming knee surgery: 'I’m calm and positive about the situation'

Ter Stegen will undergo surgery on his knee on August 18.

The goalkeeper reveals he took this decision to prevent problems in the future.

He is expected to miss the start of the season.

"I will undergo an Intervention for my knee tendon. The medical experts and me discussed to do this "Clean-up" as there were some irritations earlier this season.

It’s a proactive intervention in order to prevent and prepare for the future," Marc-Andre ter Stegen tweeted.

"I will need some weeks to recover and to return to 100%. I’m calm and positive about the situation, I will come back soon.

Once again, thanks for all the support I’ve been receiving. I appreciate it a lot!"

The 27-year-old will undergo surgery on August 18, he will be operated by Barcelona's doctor Ramon Cugat. According to reports, the German will miss the start of the next season.