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Arizona - Freddie Tagaloa Jr. T
The massive (6'8 315) transfer from Cal is a huge addition to a Wildcat line that needs a boost in 2015 after losing its three best starters. It looks like Tagaloa is going to become a starter this year after redshirting in 2014 and will be a huge asset to the Arizona front line.
Arizona State - Devin Lucien Sr. WR
Lucien decided to leave UCLA and play his final season at Arizona State as a grad student just a few months ago. He isn't going to set the world on fire in Tempe, but he will provide excellent depth to a unit that really needs another proven Pac-12 contributor.
Cal - James Looney So. DT
Looney was developing into a starter at Wake Forest before heading out West and now could be a starter for the Bears as a 6'3 285 plugger up front. The Bears have a lot of defensive linemen with talent and potential heading into 2015 and Looney is one of them that surely will be a key part of their defensive rotation.
Colorado - Shane Callahan Jr. T
The Auburn transfer is now eligible for the Buffs and has a great chance to start right away as one of the most purely talented linemen on the Colorado roster.
Oregon - Matt Hegarty Sr. C
Vernon Adams has the potential to be the much more impactful transfer for the Ducks, but his potential has been discussed enough already and he might not even make it to Oregon or win the starting job, so it's time for Hegarty to get a shout out. A starter for Notre Dame, the grad transfer is the likely successor to Hroniss Grasu at center and should really aide the drop off from the graduation of the All-American.
Oregon State - Kyle Peko Sr. DT
Peko isn't a guaranteed impact because he still has to pass summer classes to remain eligible, but he could make a huge impact for the Beavers if he can finally get eligible and get on the field. He has been a tease for Beaver fans since he has been around for more than a year now but never gotten eligible, but he can be a huge presence for Gary Andersen's defense in his first year if he can finally make it happen.
Stanford - Brennan Scarlett Sr. DE
This one has to sting for Cal, as Scarlett looked to be their best returning defensive lineman and now he is wrapping up his career in Palo Alto. He will help the Cardinal ease the pain of losing all of their defensive line starters from 2014 and could be their best pass rusher if he can stay healthy.
UCLA - Josh Rosen Fr. QB
I couldn't find an impactful transfer for the Bruins, so I am going with Rosen who is technically a high school transfer as a true freshman who is likely to be their starting quarterback in 2015.
USC - Matt Booermeester So. K
Not exciting, but JC transfer Booermeester is competing to be USC's starting kicker in 2015.
Utah - Jason Thompson Jr. S
Thompson transferred from Wyoming where he was actually a quarterback, but looks like a very good safety in the making at Utah. He looks like he will be a starter in 2015 and a big boost for a Utah secondary that lost every starter from 2014.
Washington - Ezekiel Turner So. S
The Huskies have a great young safety returning in Budda Baker, but he needs a quality safety to be paired with. Turner could be that guy. A big physical safety, Turner is a JC transfer that looks like he will be the starter alongside Baker.
Washington State - Jeremiah Mitchell Jr. DE
The Cougars have long relied on JC transfers and their most highly-anticipated JC transfer this year is Mitchell, an edge rusher who could bring a lot of athleticism to a big Cougar front.