Former Poland international Zbigniew Boniek claims that his eight-year grandson is more skilful than England striker Andy Carroll.
The 23-year-old is included in the Three Lions' squad for their 2014 World Cup qualifier against Poland in Warsaw on Tuesday.
Carroll is unlikely to start the match, but Boniek is not concerned even if he does.
"My grandson Mateo moves better on the pitch than Andy Carroll," he is quoted as saying in The Independent.
"He has better co-ordination. He is very good at golf and tennis."
Gunning for victory
Meanwhile, Poland coach Waldemar Fornalik has warned his English counterpart Roy Hodgson that his side will not settle for a draw in their Group H encounter.
"A wise man told me that if you try to draw a game, you lose," he said. "If you try to win, it is possible to win.
"I've always told my teams we have to go for the three points. The way we plan this game might be different but the objective is to win.
"When I took over the position, I was aware of the fact I would have very little time and that this match was coming up in the calendar.
"I thought perhaps this match was going to be an opportunity, this match would give us a better picture of what we are after the changes we have implemented.
"It is a very important game but it will not determine the final result of the qualifiers.
"This game is a big event in Polish football. The Euros were a huge event on a European, if not a global, scale.
"Poland v England has always been of big importance and this is how we see this match as well. The two teams are fighting for the three points.
"We are aware of the high class of our opponents but we also know what we are worth."