I feel Gasser is much more a 3 here. He's already 24 and many places no longer consider 25 a prospect. The Brewers are planning on still having Burnes, Peralta, Woodruff, Ashby, and Houser back. Miley would easily be welcomed back in the same role he has this year I would think. Rea will still be around. Lauer is an unknown but could be in the mix.
If Gasser can't beat out Tehran and Rea now, will next year be much different? Is he going to repeat AAA? Gasser looks to be an emergency option at this point.
He's a solid prospect but I fell much more comfortable about finding a back end rotation piece (hey Miley!) cheaply than filling in other spots where the Brewers have highly valued prospects. Especially since the Brewers often limit the workload of back end starters though working only 2 times through the order and 6 man rotations.