The sponsor name won't tell you what level, and you cannot be certain if they chose what YOU consider the "best" option. (I in fact tend to pick the bi-weekly for convenience) And as I said elsewhere the sponsors vary.

Env isn't on your list.

The only hint that I take from the player's shirt is if it is Official kit, the player is not likely to be a GEM.

I think salary might be a clue to his level though.