He's experienced action against both halves of the Glasgow divide - but it's Celtic who Florian Wirtz wants to know all about.The rising German star made his comeback from injury against Rangers in a friendly earlier this season and has been touted for big moves across Europe.
Another of his Bayer Leverkusen teammates who have been linked with transfers is Jeremie Frimpong, who joined the Bundesliga side in 2021 from Parkhead, the year which his good mate netted against Ange Postecoglou's team during a Europa League match at Parkhead.
A fruitful friendship has been struck up by the pair and it was Wirtz who helped the former Premiership right-back settle into life at Leverkusen.
Both are now thriving under head coach Xabi Alonso but Frimpong told Relevo that his Celtic debut stunned him, and his pal had questions about the club.
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