Milesi, born in Brazil and a holder of dual Brazilian-Italian nationality, has 11 years of experience in campaigning communications in the fields of sport and Government and seven years’ experience as a journalist in Brazil and the United States.

He worked for the Rio 2016 bid team and then the Organising Committee before spending four years as communications director for the 2014 FIFA World Cup.

He has worked as media officer for the US State Department as well as consulting for the Brazilian Volleyball Federation and several football clubs.

insidethegames has been told that Guillon-Morel left by mutual consent for personal reasons.

Milesi will take up his post with immediate effect.

"I am thrilled to be starting in my new role at such an exciting time for the Paris bid and I will draw on all of my experience in campaigning communications in order to help us get the right result in Lima next September," he said. 

"I can see Paris as a city and as a bid has a great offer to the Olympic Movement and I'm looking forward to working with all colleagues and stakeholders to help bring the Games to Paris in 2024."

He will now work alongside British based communications consultancy, Vero.

"We are delighted to appoint Saint-Clair as communications director for the vital remaining months of the campaign," added Paris 2024 chief executive, Etienne Thobois.

"Saint-Clair brings with him a wealth of experience in sports communications after playing an important role in the successful Rio 2016 Bid and serving as Communications Director for the FIFA World Cup in Brazil.

"The appointment of an international citizen as our communications director reaffirms the global approach of the bid and he will work on domestic media and in close collaboration with our international communications agency, Vero. 

"We are all looking forward to working with Saint-Clair to promote our vision for a spectacular celebration of sport and Olympism in 2024."