Can anyone help me with this trick any tips to grip the ball with the foot like Nezad, Iya etc.?
To be honest, it depends on a couple of factors, mostly what ball and shoes you use, as well as the strength of your front shin muscles and mobility of your ankles.
The easiest way is to use a rubber ball, like the Urbanball, for example.
If you prefer regular footballs or don't have access to a ball made of rubber, the next best thing is to get one of those cheap Adidas (Glider, Capitano, Top Training) or Nike (Strike, Pitch) replicas which are made of a material that's a bit rubbery. Also, some of the older Adidas matchballs like Teamgeist or Europass are also cool.
What also plays a roll is what material is the upper of your shoes made of. I've found that shoes with leather upper have the best grip, not only for magnetic tricks, but also in general.
The most important thing though, is how strong your front shin muscles (tibialis anterior) are and how mobile/flexible are your ankles/calves. With strong front shin muscles you'll be able to clutch the ball harder and with the increased ankle mobility, you'll be able to bring your foot closer to your shin.
To strengthen your tibialis anterior, do
this or
this. To get some mobility in your ankles, do
this and to stretch your calves, do
this or just grab the top of your foot with your hand(s) and pull it towards yourself/your shin.
Tips & tricks:
- have a clean contact area (ball, shoes & shin), dirt and excessive sweat can screw your grip up
- if you sprinkle some soft drink on the surface of your ball and/or shoes, you'll make it sticky, thus enhancing your grip
- shaving the bottom part of the shin where the ball comes in contact helps, especially if you're really hairy
