Yes I would not say he could not play one of our safety post if need be. But why? IMO we need him starting @ OLB'er ! He fits perfectly with JL & Jo. Tree's speed is nothing special about a best 4.57 & normal 4.67 in the 40. He weakness is in his power & strength. But he is 6-2 1/2 @ 245 now & should get thicker & stronger as Tree learns what he needs to do to beat off those blocks that is hurting him currently. He is only 22 yrs old.
I think he was a great selection and fits in very nicely overall in Fisher defense. I would also add that the rookie UDFA's LBers on this team now excites me for the future. Ray Ray Armstrong, Darin Bates, Jonathan Stewart & Phillip Steward were the best youthful LB'ing cadre added to this team in decades.
As far as seeing a need @ safety now ??? second yr first yr starter Rodney McLeod seems to get a little better game. Veteran safety Matt Giordano has earned & worked himself as the Dime back and has done well too. Darian Stewart is still leaving nasty chunks of rust all over the field but I need to remember that Stewart missed all of the minis, training camp, pre season & most all of the 2012 season then he did the same this season missing OTA's TC & preseason & the first 3 games with nagging injuries. Then you throw in the two biggest hitters on this defense both are on IR in Matt Daniels(24) & TJ McDonald(22). Other safety projects are UDFA rookie Cody Davis & S/CB 2nd yr PS Quinton Pointer. On top of that there has been a lot of scuttlebutt this week that when Cortland Finnegan returns to full health & having him inserted into safety post.
That's eight named safeties right there all but two of them 25 or younger. If both Stewart can not improve fast in the vacancy left by the injury to rookie TJ then he needs to be released ASAP when TJ is ready thus giving others the chance to show their stuff. One thing Stewart does do well is HIT!