Horus makes a good argument for Shields but, for me, there are so many others to choose from.
Brookes has been v good, likewise Tom Willis, Dan Robson. A mention too for Gaskell who must have played more minutes than most, Thomas Young, Tom Cruse and of course Josh Bassett.
JTA too for his enthusiasm and obvious enjoyment of the game. Too many penalties given away leaves Will Rowlands off my list.
But I'm going to give it to Tom West who, for me, has been quietly efficient and very effective.