Jimmy Floyd Hasselbaink, Malcolm Christie, Szilard Nemeth, Gaizka Mendieta and Stuart Parnaby all successfully negotiated their first full training session yesterday.
All five players will train this week with a hope that they will be involved in the Tees-Wear derby at the weekend.
Meanwhile, Mark Schwarzer (shoulder) and James Morrison (ankle) are both being assessed for knocks they received from Wigan's Lee McCulloch on Sunday.