After making his senior debut with Las Palmas' C-team in the regional leagues during the 2014–15 campaign, Athuman subsequently started to appear for the reserves in both Segunda División B and Tercera División. On 5 December 2015, he agreed to a loan deal with third division side CP Cacereño until the end of the season.[3]
Athuman subsequently returned to Las Palmas B in July 2016, but rescinded his contract the following 31 January,[4] and subsequently signed for Granada CF's reserves in the third tier.[5] On 13 July 2017, he moved to fellow league team CF Fuenlabrada.[6]
On 22 August 2018, Athuman returned to Las Palmas and their B-side, now also in the third division.[7] He left the club in the following July, but rejoined the side on 2 January 2020.[8]
On 5 October 2020, after playing for the main squad during the entire pre-season, Athuman was promoted to Las Palmas' first team in Segunda División.[9] He made his professional debut on 5 December, starting in a 0–0 away draw against SD Ponferradina.[10]