Immediately after signing his contract, Konstantinos Karetsas was off again: first, he handed out gyros plates, as well as signing autographs and taking selfies, at the Olympia-Grill in Kamen, then he was introduced to some of the staff at Borussia Dortmund. We followed our new number 19 every step of the way and are showing you the best moments from his first day. ▶ Subscribe & hit the bell: https://goo.gl/kujepC BVB-TV: https://www.bvb.tv/ Twitch: https://www.twitch.tv/bvb_official Twitter: https://twitter.com/BVB Instagram: https://www.instagram.com/bvb09 Facebook: https://facebook.com/BVB TikTok: https://www.tiktok.com/@bvb Website: https://www.bvb.de/ #BVB