UEFA head of refereeing Pierluigi Collina wants a crackdown on dangerous tackles and players mobbing match officials to demand yellow cards this season.

Collina also declines to back goalline technology, which could be approved by FIFA in July 2012.

The former World Cup final and Champions League final referee says UEFA is ''very, very happy with the human solution'' to decide goalline controversies, with extra assistants beside each goal.

Speaking before the Champions League draw, Collina says players need protecting from reckless tackles because ''we don't want to see broken legs.''

Collina says incidents ''where players run a long distance to crowd referees and put pressure on referees'' is bad for football's image.