Gary Smith, Paco Luna, Janos Matyus, Derek Townsley and Tony Caig are all out of contract next summer, but it's up to them to earn new deals.
Bobby said: "We have a number of players who are out of contract but I won't be making a decision of their futures until January of February at the earliest. The players have got to earn the right for a new contract. They have to prove they are worth a new contract or the wage rises they might be looking for."
Despite losses of £2.8m in the last fianancial year, the manager is still looking to improve the playing squad come the transfer window in January. Bobby added: "It is an ongoing job looking for new players, regardless of whether or not the transfer window is open. I have taken in seven matches this week and will continue to do so because we are always looking to strengthen the team."
On the news that 2nd choice 'keeper Tony Caig will be moving to Newcastle
It is understood Bobby has looked at one already, Hamburg goalkeeper Carsten Wehlmann. The German has been on trial at Easter Road, and has stated he would love a move to Scotland. Wehlmann said: "So far I have made a good impression. On Wednesday there is another friendly match that I should take part in."