My guess would be asst special teams for Dray. Maybe he would be asst WR coach, but the other spots vacated were defense or strength and conditioning. Dray was a solid special teams player for the Cardinals.
Browns HC Kevin Stefanski is not retaining these assistants: Ryan Lindley (QB), John Lilly (TE), John Parella (Asst DL), Deuce Schwartz (Def QC), Tyler Tettelton (Off QC), Alonso Escalante (Def QC), Jody Wright (Off Asst). Off Asst Jim Dray has been hired by Arizona.