Without McGregor we'll have a significantly weakened defence for our most important game of the whole season in the return leg at Fir Park, so I don't think we can afford to go into it trying to defend a fairly narrow lead like we did today. We have to hit Motherwell as hard as we can at Ibrox, but make no mistake, they're still a step up from the sides we've been playing most of the season and I expect them to punish us for any slackness. Just as well we're getting a slightly longer rest before this one because the last 2 ties have been tough.