[9] On 5 August 2021, Almansa signed with the Overtime Elite (OTE), a professional basketball league for high school-aged players, ahead of its inaugural season.

Almansa led the national under-17 team to a silver-medal finish at the 2022 FIBA U17 World Cup in Spain, which was their first-ever medal at the event.

[23] He averaged 12.1 points, 11.9 rebounds, 1.6 assists, 1.6 blocks and 1.1 steals per game on 55.7 percent shooting and was named the tournament MVP – the first non-American player to ever win the award.

He averaged 15.7 points, 10.7 rebounds, 1.6 steals, and 1.1 blocks in 25 minutes per game, leading Spain to a gold medal and winning tournament MVP honors once again.

[24] In November 2024, Almansa was named in a Spanish senior national team squad for a pair of FIBA EuroBasket qualifier games against Slovakia.

[25] Almansa received the Princess Leonor Award – given to the best under-18 Spanish athlete – from the King of Spain, Felipe VI, at the 2022 Premios Nacionales del Deporte.

[26] In 2023, Almansa enrolled at the Universidad Católica San Antonio de Murcia to pursue his Bachelor of Business Administration through an online program specially developed for athletes in concert with the Spanish Olympic Committee.