I don't think it's coincidence that our defensive form dramatically dropped when GMAC was dropped from the side. 38 is old in footballing terms but in reality, these days, players can go on much longer if their game doesn't rely on speed. If he's still got the fitness, I'd be happy to keep him on for another season. Look at Bernard Hopkins as an example of how the oldies can still be goodies. He was still embarassing world class fighters into his late 40's in a sport that is know for being a "young mans game". Age isn't that important....fitness, nutrition and talent/ability are.