On 11 October, AS Monaco announced that they had parted ways with manager
Leonardo Jardim. Two days later, 13 October, AS Monaco announced the appointment of
Thierry Henry as their new head coach on a contract until June 2021. On 24 January, AS Monaco announced that they had suspended Thierry Henry and that
Franck Passi would be leading the team while they made their decision on Henry's future. The following day, AS Monaco announced Henrys permanent departure and the re-appointment of Leonardo Jardim as manager.
Transfers Summer On 8 June, AS Monaco announced that
Terence Kongolo would be joining
Huddersfield Town on a permanent basis when the transfer window opened on 1 July. The following day, 9 June,
Samuel Grandsir signed for AS Monaco from
Troyes on a five-year contract to begin 1 July 2018. On 13 June, goalkeeper
Paul Nardi joined
Cercle Brugge on a season-long loan deal, with
Pierre-Daniel N'Guinda, Yoann Etienne and
Kevin Appin all joining Cercle Brugge on loan for the 2018–19 season on 16 June. Four days later, on 20 June,
Guévin Tormin also joined Cercle Brugge on a season-long loan deal. On 19 June,
Willem Geubbels joined Monaco from
Lyon. On 23 June,
Gil Dias joined
Nottingham Forest on loan for the 2018–19 season. On 27 June, Monaco announced the departure of
Mehdi Beneddine to
Quevilly-Rouen. On 28 June,
Tiago Ribeiro joined Monaco's Academy squad from
Porto, while Franck Irie joined Cercle Brugge on a season-long loan deal. The following day, on 29 June, Sofiane Diop and Isidor Wilson joined Monaco from
Rennes. On 2 July,
Robert Navarro joined Monaco from
Barcelona. On 4 July,
Irvin Cardona re-joined Cercle Brugge on loan for the 2018–19 season. On 6 July, Monaco announced the signing of
Jonathan Panzo from
Chelsea, and
Pelé on a five-year contract from
Rio Ave. On 9 July, AS Monaco announced the signing of
Ronaël Pierre-Gabriel on a five-year contract from
Saint-Étienne. On 10 July, AS Monaco announced the signing of
Antonio Barreca on a five-year contract from
Torino, with
Soualiho Meïté going in the opposite direction. On 20 July, striker
Adama Diakhaby followed Terence Kongolo in signing for Huddersfield Town for an undisclosed fee. On 24 July, Monaco signed
Jean-Eudes Aholou from
Strasbourg on a five-year contract, while
João Moutinho moved to
Wolverhampton Wanderers and
Adrien Bongiovanni joined Cercle Brugge on loan for the season. On 27 July, Monaco announced the signing of
Aleksandr Golovin to a five-year contract for an undisclosed fee from
CSKA Moscow. Three days later, on 30 July, Monaco confirmed that
Thomas Lemar had left the club to sign for
Atlético Madrid. On 5 August, Monaco announced that
Rachid Ghezzal had joined
Leicester City, with Nabil Alioui joining Cercle Brugge on loan the next day. Two days later, on 7 August,
Boschilia extended his Monaco contract until the summer of 2021, then joined
Nantes on a season-long loan deal, while
Álvaro Llorente moved to
Extremadura on a season-long loan. On 8 August,
Jonathan Mexique joined
Cholet on a season-long loan deal. On 13 August, young midfielder
Ibrahima Diallo joined
Brest on a season-long loan deal, while
Keita Baldé joined
Inter Milan on a season-long loan deal with an option to make the move permanent. On 22 August,
Dinis Almeida joined
Xanthi on a season-long loan deal. On 28 August,
Benjamin Henrichs joined AS Monaco on a five-year contract from
Bayer Leverkusen. On 30 August,
Nacer Chadli signed a three-year contract with AS Monaco from
West Bromwich Albion,
Jorge joined
Porto on a season-long loan deal and
Lacina Traoré had his contract terminated by mutual consent. The following day,
Elderson Echiéjilé also left AS Monaco after his contract was also terminated by mutual consent.
Winter On 2 January, AS Monaco announced their first signing of the winter transfer window, with
Lyle Foster arriving from
Orlando Pirates to sign until June 2023. The following day, 3 January, AS Monaco announced the signing of
Naldo on an 18-month contract, after his
Schalke 04 ended. On 10 January,
Fodé Ballo-Touré signed from
Lille on a contract until June 2023. The following day, 11 January,
Cesc Fàbregas signed for AS Monaco on a contract until June 2022, and
William Vainqueur joined on loan from
Antalyaspor on 12 January. On 20 January,
Samuel Grandsir was sent on loan to
Strasbourg for the remainder of the 2018–19 season. On 24 January, AS Monaco and Nottingham Forest agreed to cancel
Gil Dias's loan deal, allowing Dias to sign for
Olympiacos on loan until 30 June 2020. On 27 January, AS Monaco announced the arrival of
Gelson Martins on loan from
Atlético Madrid until the end of the season. On 30 January, AS Monaco announced the signing of
Carlos Vinícius on loan until the end of the season. On 31 January, transfer deadline day,
Georges-Kévin Nkoudou joined from
Tottenham Hotspur on loan until the end of the season, whilst
Youssef Aït Bennasser,
Pelé.
Antonio Barreca,
Almamy Touré,
Adama Traoré and
Loïc Badiashile all left on loan for the remainder of the season, joining
Saint-Étienne,
Nottingham Forest,
Newcastle United,
Eintracht Frankfurt, Cercle Brugge and
Rennes, respectively. Also on transfer deadline day,
Adrien Silva joined on loan from
Leicester City for the remainder of the season, with
Youri Tielemans going the opposite way on loan for the rest of the season.
Contract extensions On 11 July,
Julien Serrano extended his contract with AS Monaco until the summer of 2022. On 18 July,
Kévin N'Doram extended his contract with AS Monaco until the summer of 2023. ==Squad==