Former Manchester United boss Sir Alex Ferguson has backed sin bins for the Champions League.
Ferguson, chairman of a UEFA forum of elite coaches, is also hoping to see UEFA increase the number of substitutes to 11 in European finals - to recognise the contribution a squad plays in getting teams there.
"I chair a forum of elite coaches that meet every year and I'm a member of the technical study group of the Champions League and the European Championship," said Ferguson.
"So I'm still involved in football at the highest level. Right now we're looking at the possibility of introducing sin-bins like they have in rugby - a 10-minute suspension during the match.
"But we want to be careful that somehow it isn't exploited if it's introduced."
