I hope they do not waste a roster spot on a 4th TE, not this year.
With Witten back, and Jarwin and Schultz emerging. And they have been using Olawale in some TE type roles for blocking in TC. They do not need a 4th TE.
I know McElroy and Lucas look good in the PS games. But there are always players like that and still do not make the team.
They need to do several things to keep 2 extra players at other positions. Only keep 2 QB's and 3 TE's, as that frees up 2 important spots. Extra WR, DL, DB or LB, well a combination of 2 at those spots.