The aim of the paper is to explore the use of integrity pacts and/or legality clauses as a tool in fighting corruption in public procurement. Τhe paper presents concisely the main characteristics and track record of the use of integrity pacts, followed by a brief analysis of the provisions on debarment as a means to fight corruption in public procurement. The paper proceeds to an analysis of the case law of the CJEU regarding the use of integrity pacts and legality protocols. Finally, the paper makes a brief presentation of the notion of conflict of interests and its main features, in relation to the relevant provisions of the Directives 2014/24/EU, 2014/25/EU and 2014/23/EU and comments on the potential use of integrity pacts / legality protocols as a tool used to prevent, identify and remedy conflicts of interests.