The 20-year-old caught the eye of clubs across Europe with stellar performances in the 2020-21 season, as he amassed 20 goals and eight assists from 39 appearances in all competitions.
Manchester United and Arsenal have previously been linked with a swoop for Sima, although the Red Devils are not thought to be planning a move for a striker following Edinson Cavani's contract extension.
According to The Telegraph, West Ham manager Moyes is a keen admirer of Sima and is monitoring his situation at Slavia Prague, where he is contracted to until 2024.
The report adds that Spartak Moscow's Alex Kral and Burnley defender Phil Bardsley also feature on the Hammers' transfer shortlist, and Sima already has experience of Europa League football, netting four times in last season's competition.
The two-cap Senegal international struggled with a groin problem during the latter stages of the 2020-21 season, though, and scored his 11 league goals in the space of 11 matches. body check tags ::