clomid/nolvadex clearance times for mma testing?

[GoneForever]

Ok so I've got a buddy with a fight coming up. He's been on test prop for about 7weeks at around 500mg per week. It says prop is out of your system in 2weeks for testing, so he's gonna play it safe and take last shot 3weeks before fight. During those 3weeks he's gonna run gaspari novadex and then start a real clomid/nolva pct after the fight. So, my ? is, how long will nolvadex and clomid stay in your system for a drug test? He doestnn have another fight for a few months but just wondering?