Great news! He visited with a lot of teams which shows that we weren't the only team interested and that's a good thing. Butler might not have as big a name as Harrison, Elvis, Freeney etc. but he's younger, cheaper, and hungrier.
I see some people are saying this was a depth signing and they may end up being the case, but he could end up being a lot more than that. We as fans really have no idea as to what his potential is but NFL people, on several teams, saw something in this guy they liked and that's good enough for me.
We can now go into the draft with more options but more importantly Rob Ryan doesn't have to go into next season with so many unknowns at OLB. Who the hell knows how Tez and Junior will transition to the 3-4? At least we have one LB who'd familiar with RR and the 3-4.