Florenzi started his professional club career with Roma in 2011, but spent the 2011–12 season on loan with Crotone. Florenzi was appointed as Roma's new captain following the departure of Daniele De Rossi in 2019.[3] He later had spells on loan with Spanish side Valencia, and French side Paris Saint-Germain, winning the Trophée des Champions and the Coupe de France with the latter club during the 2020–21 season.
During the summer of 2011, Florenzi was sent on loan to Serie B club Crotone. He made his debut on 27 August 2011, scoring their goal in a 2–1 home defeat against Livorno. On 22 June 2012, Crotone exercised the option in the loan contract to buy half of the registration rights for €250,000.[4] On 6 July, Roma bought back half of the registration rights for €1.25 million.[5]
Florenzi made his first appearance of the 2012–13 Serie A season as a second-half substitute in the 2–2 draw against Catania on 26 August 2012. He made his first start in the 3–1 victory against Internazionale the following week, also scoring his first-ever goal for Roma.[6] Florenzi ended his first full season with the Roma first team, making 36 Serie A appearances and scoring three goals. On 31 July 2013, Florenzi scored and assisted a goal in a 3–1 over the MLS All-stars in the 2013 MLS All-Star Game, and was named the MLS All-Star Game MVP.[7]
During the 2013–14 Serie A season, Florenzi helped guide Roma to a second-place finish and a return to Champions League football for the first time since the 2010–11 season. Florenzi also featured in all ten of Roma's victories from the start of the season, a Serie A record, scoring against Livorno, Parma, Bologna and Inter during the run.[8] On 12 January 2014, Florenzi scored a fantastic, bicycle kick goal to open the scoring in Roma's 4–0 victory against Genoa. Florenzi played in 36 of Roma's 38 Serie A fixtures during the season.[9]
Florenzi made his first appearance of the 2014–15 Serie A season on 30 August 2014 as a second-half substitute in the 2–0 victory against Fiorentina. He then started the 0–1 away victory against Empoli on 13 September. Florenzi made his Champions League debut as a substitute for the injured Juan Iturbe in the 5–1 group stage victory against CSKA Moscow on 17 September.[10] Florenzi scored his first goal of the season as Roma won 2–0 against Cagliari, having set up Mattia Destro for the opener.[11]
On 16 September 2015, Florenzi scored the tying goal from 50 yards out against reigning champions, Barcelona when he spotted the goalkeeper at the edge of his box during the group stage of the Champions League, resulting in a 1–1 draw.[12] The goal was later named one of the three final nominees for the 2015 FIFA Puskás Award.[13]
On 26 October 2016, Florenzi suffered an anterior cruciate ligament injury in his left knee during Roma's 3–1 away win against Sassuolo, causing him to be out for at least four months.[14] On 17 February 2017, Florenzi was ruled out for the rest of the season after suffering a further tear of the same ligament in his first week back in training.[15] On 16 September 2017, he made his return in Roma's 3–0 home victory over Hellas Verona.[16]
On 11 September 2020, Florenzi joined Ligue 1 club Paris Saint-Germain on a season-long loan with an option to buy. He was given the number 24 shirt.[18] Two days later, he made his debut for PSG in a 0–1 loss against Marseille.[19] On 2 October 2020, Florenzi scored his first goal at the Parisian club, in a match against Angers that ended in a 6–1 victory.[20]
On 21 August 2021, AC Milan announced the signing of Florenzi from Roma on an initial loan deal, with the option to make the transfer permanent. Florenzi signed for the team until 30 June 2022.[23] On First of October, Florenzi underwent surgery to his partially torn medial meniscus in his left knee.[24] He was back on the pitch almost after 2 months against Fiorentina.[25]
He scored his first goal for Milan on 22 December against Empoli in eventual 4–2 win, it was also his first goal from a free-kick in Serie A.[26][27] On 6 April 2022, he underwent a surgery on his left knee to repair the internal meniscus.[28] On 8 May against Verona, he played his first match since the injury, coming on as a substitute and scoring the third in 3–1 win for Milan.[29] In total, Florenzi played 30 matches for Milan this season, scoring 2 goals, contributing to the club's 19th Scudetto; it was Florenzi's first Serie A title.
On 1 July 2022, AC Milan announced the signing of Florenzi from Roma on a permanent basis. The defender has signed a contract with the club lasting until 30 June 2025.[30] He suffered a hamstring injury in early September 2022, and was successfully operated by surgeon Lasse Lempainen in Turku, Finland.[31]
Florenzi is a tenacious, tactically intelligent and well-rounded player who is extremely versatile. Although initially he was usually deployed as a central midfielder, in the "mezzala" role, he is a box-to-box player capable of playing anywhere in midfield, and he has recently also been deployed as a winger, and even as an attacking full-back or wing-back on either flank throughout his career, although he favours the right side.[42][43][44] Florenzi is a quick, energetic and hard-working player who is effective at aiding his team both offensively and defensively due to his pace and stamina;[45][46] when used in more offensive midfield roles, he has also demonstrated an aptitude for making offensive runs.[47][48] He is gifted with good technical skills,[49] distribution,[45] and crossing ability, and despite his small stature, he is effective in the air; he is also a good striker of the ball, and an accurate set-piece taker.[48][50] Florenzi has cited Cesc Fàbregas as his role model.[43]
^"Comunicato Ufficiale N. 24" [Official Statement No. 24] (PDF) (in Italian). Lega Serie A. 30 August 2016. p. 4. Archived from the original(PDF) on 24 April 2022. Retrieved 14 June 2021.