Willian had a really strong finish to the season and looks like a decent transfer for Arsenal. It's a free signing and when he wants to be, he's a good player. In this Arsenal team he will probably be a starter.

Regarding the Thiago deal - I really hope it's true. Liverpol probably waited and tried to get Wijnaldum deal done, since he's not signing this would be a perfect transfer. A superior player to Gini and an improvement to an already great team. Happy days