According to London Evening Standard, the player has been given the permission to travel to England for his medical with the Hammers. Moyes has also confirmed that the deal is close to completion.
The defensive midfielder will join West Ham on a loan deal and the Hammers will have the option to sign him permanently for a fee of around £17million.
It will be interesting to see how Soucek performs in the Premier League. The 24-year-old defensive midfielder has the talent to adapt to English football and he is physically well equipped as well.