Soucek has become a fan favourite at West Ham since arriving on loan from Slavia Prague last January, before making his move to London a permanent one in the summer for just £15 million.
This season has seen Soucek establish a formidable partnership with Declan Rice in the centre of midfield and the Czech Republic international has been able to add goals to his game this season as well, netting nine in 33 Premier League appearances this term.
Speaking on whether Soucek is the signing of the season and how his stats back up his opinion, Harewood said:
“Yeah, best signing of the season by far and he’s got everything. His stats say everything really when you compare them to anyone else in the league.”
David Moyes has previously admitted that the club will have to listen to offers for both Rice and Soucek in the summer, even if they successfully complete a surprising bid for a top-four finish.