We have so many pitchers with the same hopes as Mullins, IMO. Sure, it would suck to trade the one that turns out good, but I'm thinking the odds of him doing well are pretty low.
I'm still sticking to my opinion that I'd give nothing for Arenado, unless we end up paying him less than $10M x 3.
Here is how I tier our pitching prospects:
1 Perales
2 Fitts, Priester (not a prospect but...) Sandlin (maybe not a SP) Tolle
3 Dobbins, Early, Cason, Guerrero (RP) Valera, Reyes
4 Penrod (RP) Monegro, Paez, Mullins, Ingrassia
5 Delzine, Neely, Clarke, Tygart, Fajardo, Carlson, G Jackson, Mata
Long shots: Dean, Gambrell, Drohan, Rivera, Kirwin, Ehrlicher
Mullins might be ranked 13th to 17th on our pitcher rankings, IMO.
(I'd keep him over Jordan, and even #18 Allan Castro OF.)