AFL football operations boss Mark Evans still supports the controversial goal review system The goal review system has come under fire. Picture: Michael Klein AFL footy operations boss Mark Evans is in favour of the controversial goal review system remaining while the league assesses better technology. But adding further confusion to the contentious issue today, asked if he could guarantee the system would remain for the rest of the season, Evans answered no. Evans admitted the system wasn't perfect but stressed only 1 per cent of scores were reviewed. "There are two options for this year really, you can either run the system that we have got or that you can get rid of it and go back to the goal umpires call," Evans said. At the moment the system provides the opportunity for us to review something that was a very clear error. The issue for us that we're monitoring and we'll need to watch across the rest of the season is there appears to be far more inconclusive episodes this year than there was last year. No (I can't guarantee the system will stay for the rest of the season). I'd say we'll keep watching where we're going at the moment. If it's going to reduce the error rate by the absolute shockers, removing those, then I think it stays while we assess other options. He said the league was considering new goal-line technology, including new camera angles and the plausibility of a microchipped football, but it was yet to find a suitable product for the code. He didn't think an answer to the problem was two goal umpires. "My personal view is that microchipping the ball will lead us down the path towards a better solution," Evans said. But there are other systems that are camera based systems, some that triangulate where the position of the ball is and others that sue a magnetic force. We'll look at all of those but at the moment, the clear message is there's no system out there at the moment that covers the complexities of our game. He said he was unsure when a new system could be in place or how much it would cost.