Reynoso had his debut in 2014, playing for Talleres when the team was competing in the third division. Talleres won the tournament in 2015 and got promoted to B Nacional, the Second Argentine Division. Reynoso had great importance on Talleres winning the 2016 Primera B Nacional, when the team finally was promoted to Argentine First Division, after 12 years. He was one of the most important players on that team and then had a great performance in 2017 in the First Division, scoring relevant goals against Lanús and Boca Juniors.
On 1 September 2020, Reynoso signed with Minnesota United FC.[3] He made his Minnesota United debut on 2 September 2020 against Houston Dynamo.[4] He scored his first goal for the club on 8 November 2020 against FC Dallas.[5] With an assist in the 67th minute of the Western Conference Finals of the 2020 MLS Cup Playoffs against Seattle Sounders FC, Reynoso set a single season MLS record with his seventh assist of the playoffs.[6] He was also the first MLS player in league history to record multiple three-assist playoff games.[7]
Reynoso signed a three-year contract extension with Minnesota United FC in September 2022.[8] After being cleared to return from Argentina despite a potential criminal trial,[9] he failed to report to preseason training with the team in January 2023 and was suspended without pay by the league on 10 February 2023.[10] Reynoso's absence was described as being related to "personal matters" by manager Adrian Heath, who was in contact with his family in Argentina;[11] he later explained it was related to "a problem with his daughter" and unrelated to legal issues.[12] Reynoso returned to training in Minnesota on 6 May, having missed 10 matches of the MLS regular season, and his suspension was lifted on 17 May.[13] He played in 18 matches and scored 6 goals during the regular season.[14]
He missed the first week of training during the 2024 preseason but joined Minnesota United FC for friendlies and scrimmages in Tucson, Arizona.[15] Reynoso injured his left knee during preseason and was unable to play for the first three matches of the regular season, but appeared as a substitute for 31 minutes against Los Angeles FC on 16 March. He returned to Argentina during a scheduled bye during an international break to obtain his green card for permanent residency in the United States, but failed to attend his appointment.[16] Reynoso remained in Argentina for seven weeks and did not return to Minnesota United FC until early May;[17] he did not return to training with the first team and the club publicly expressed their desire to transfer him.[14]
He was arrested on 7 December 2021, for allegedly hitting a teenager in Argentina.[18] On 21 May 2024, Argentine news outlet El Doce published a video purporting to show Reynoso showing off a bag of money while standing next to another man armed with a handgun who also shows off a bag of money. The video was reportedly recorded during Reynoso's visit to Córdoba.[19]
