When preparing for a negotiation, negotiator should establish a list of tradeables and a concession plan. Good negotiators never give anything away that has not already been planned as part of the bargaining mix in the concession planning stage.
In the above scenario, the procurement manager has planned his own concession, so he can trade with supplier. The answer should be "Yes, since procurement manager has his own cost savings target to achieve and he should make use of supplier's financial status" LO 2, AC 2.3