Hmmmmm.... I to assume Porro & Spence at the same time would just get in each others way.....
I'm not convinced Porro is the answer as a genuine Wfwd (maybe he 'explodes' into being one next season; tough to predict)... What works right now is the false FB thing we have going on with Emerson..... A straight back 4 may wreck that.
There's a lot to like about Porro, but he (in his current form) leaves us playing 'square pegs'.
Not really sure he played RWF against Leeds. It's def more 3 atb with the ball and him as a winger. Kulu was playing right side in the front line but just playing in more central areas.
Porro is a winger. Call it wing back or call it winger doesn't matter, he still defends the flank without the ball and attacks wide with it.
But no, I wouldn't necessarily play Spence in the Emerson role with Porro in front. I'd play Spence and Emerson or Spence and Kulu.