Angels offer arbitration to

Andrew Romine ($492,500)
Kevin Jepsen    ($1,181,250)
Efren Navarro   ($440,000)
Ryan Brasier     ($440,000)

Now to my question, maybe somebody can help me on this one.

I have Bobby Wilson and Trevor Bell on my 25 man roster and both are entering year 5 of arbitration which means previous years salary. However, both spent all of last year in the minors. If I were to want to keep both while moving them to AAA but still on the 40 man roster what would their salaries be? Does it just default to 400K?
Thanks, Shane

Yankees trade:
CC Sabathia ( salary 23M in 2013, 23M in 2014)
20M each of the next 2 seasons to help cover Sabathia's contract
David Robertson (angels offer arbitration at 3.1M)
Adam Warren (400k in 2013, first year of arbitration)
Preston Claiborne (assign to AAA on minor league contract)
Manny Banuelos (assign to AAA on minor league contract)

Angels trade:
OF Zach Borenstein (currently assigned to AZL on minor league contract)
OF Randall Grichuk (currently assigned to SS A Orem on minor league contract)
Angels 4th, 5th, 6th and 8th rd picks in upcoming draft

Angels offer arbitration to:

Mike Trout        480K
Mark Trumbo    540K
Peter Bourjos    512,500K
Jean Segura      440K
Hank Conger     495K
Alex Amarista    497,400K
Garrett Richards 480K
Jordan Walden    541,500K
Tyler Chatwood    480K (not sure about this one)