Hammers sporting director Gianluca Nani has massive wraps on the young Slovakian, saying he would fit in very well in the English game.
"He has the ideal characteristics for a Premier League footballer," he told Radio Kiss Kiss.
"I believe that Marek, who I know from my time at Brescia, is the best young midfielder in circulation, a great champion in the making.
"When he plays in the Champions League he'll be on his way to winning the Ballon d'Or.
"For me he's the new (Steven) Gerrard, a champion of international stature."