The summer transfer window has kicked off in earnest, and one name that has been running in the headlines is Nico Williams. The Athletic Club winger is at the center of a bidding war between Europe’s biggest clubs: Barcelona and Bayern Munich.

Bayern Munich are reportedly looking to hijack Barcelona's deal to sign Athletic winger Nico Williams amid lack of registration guarantees from the La Liga champions.

A proposal has been made that the Catalan team cannot match.