He's going to cost a lot more this offseason after he wins MLS Cup. SLT too. (If you had told me in 2013 that Zac and Seba would win MLS Cup in 2016 I would have been very, very happy.)
Whoever the champion is still has three games to play. Seriously, though, Zac's played really well for Colorado after displacing Irwin (who's also been very good) and got dumped on again with the Howard signing. He's at this point an experienced MLS starter and probably has earned a long term deal that pays him well, even if Colorado doesn't get the Cup.
I agree. I have no doubt that Zac will let in a howler and Seba's first touch will let him down on the way to Seattle's MLS Cup triumph.