Steve Evans has made his first signings as Crawley Town manager, snapping up four players on free transfers.
Bayes and Vieira are the most experienced of the four new arrivals
He has signed defender Jamie Stevens, 18, from his old club Boston, and ex-Yeovil defender Bradley Thomas, 23, who was on loan at Boston last term.
Experienced goalkeeper Ashley Bayes, 35, moves to the Broadfield Stadium after being released by Grays at the end of last season.
Striker Magno Vieira, 22, also joins after being released by Barnet.