I agree. There aren’t enough similarities for it to be called a rip off in my book. A red background and a player on the right hand side does not a plagiarism make.
There are five aspects to the design for something this simple:
Layout
Colour scheme
Font
Background
Wording / graphical content
Of these three are the same between the two designs and one is pretty similar. But:
Colour scheme is a given and probably predefined by the club to fit the corporate / club brand
Wording isn't identical but is unavoidably similar, graphical content is provided by the club, as it's primarily the new official team photos, or again is a given, club logos
Layout is unavoidably the same given the above. The vertical nature of a team sheet means two columns of content is the only practical layout. Most squad photos are facing left as you look at them. They'd have to be placed right or look stupid. Headings above that, subs below can't really be avoided.
Which leaves background, which is somebody else's design, and may have been something else the club mandated. Or it's the designers only significant design choice that has actually been used in the finished version.
Most of this rests on what brief and content was provided by the club to the designer. But unless this was thrown together in a couple of hours in the last 48, I'm assuming they provided some pack of stuff for it, as the photos and squad numbers weren't public until recently.
If the club provided the photo pack, logo, pantone colours or RGB numbers to be used, and the background design then I'm not sure of the creative contribution of the graphic designer in this case.
