The moves are designed to secure the players regular football in the Evo-Stik League South and challenge them in a different environment.BCFC
Right-back Dawes has signed a Youth Loan until the end of August, with the proviso to extend.
Midfielder Concannon and striker Brown, both Third Year Academy Scholars, have entered into work experience agreements with Sutton, until the end of August also with the possibility to extend.
The moves are designed to secure the players regular football in the Evo-Stik League South and challenge them in a different environment.
Concannon netted for the Royals in their pre-season friendly win at Stratford Town on Tuesday. Dawes and Brown also figured.
The trio will still be training with Blues and eligible for youth matches.
Dawes signed his first professional contract for Blues in the summer.
All three players were members of Blues Under-18s side that reached the FA Youth Cup Semi-Finals last season.