According to Thomas-Kilmann conflict model instrument, there are 5 conflict management styles:
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In this scenario, the buyer's bargaining power is stronger than suppliers', and the relationship is transactional.
Therefore, to get the most preferable outcome, the procurement professional can take an assertive approach, while he doesn't need to co-operate closely with these suppliers. Competing will be the most appropriate approach to negotiation in this scenario so that the buying organisation can get a better deal.