Meet Ianis, Justin and Enzo, the teenage sons of Gheorghe, Patrick and Zinedine who are now following in their father's stud marks and are already the subject of YouTube compilations.There are more; Joe van der Sar, Christian Maldini, Giovanni Simeone. Then there are the Brazilians; Rivaldinho (little Rivaldo) and Romarinho.If horse-racing superstar Frankel is commanding £125,000 in stud fees, perhaps football clubs should consider paying a pre-birth premium for the offspring of the game's best players.Is it, then, genetics? Or is it nurture over nature?Paul Ince was enjoying a kickabout with his toddler, Tom, in an apartment in Milan when something struck him.'I suddenly realised he was left footed – which is rare - and he just loved kicking the ball,' recalls the former Inter and England midfielder, who has seen his boy mature in to a Premier League winger with Hull.'I then saw how well he travelled with the ball and it all seemed natural – I thought, 'He's got a chance here'.'Martin Keown's son, Niall, 19, is on the books at Reading and has made the bench at senior level. The former Arsenal and England defender also knew from an early age his boy had the makings of a footballer.'I didn't think when he was born, 'Right, my son is going to be a footballer',' says the father of two.'But you do think there might be something in the genes which could transfer.'You keep an eye on them. You watch closely and there is a way that they move and address the ball. You think, 'Hold on, this looks a natural thing for him to do'.'But I'm also a strong believer that it's environmental. One of my sons is a footballer, the other is a journalist who knows everything about football – that's the environment they've been brought up in.'(dailymail.co.uk)Bakudaily.Az