Is this just a dream fight of yours or is there actual rumor/confirmation that its in the burner? I mean Collazo just unified the WBO and WBA of 105 and Yabuki is IBF 108. If he planned to move up the WBO 108 beltholder Shokichi Iwata would be more realistic.
This would be a great fight if it happened. Collazo would need to box an incredibly smart and very disciplined fight to win this, Yabuki is very heavy-handed and is great at finding openings for his counter, and Collazo has a less than sturdy chin. I don't think Collazo would have the power to put Yabuki away but he might have the youth and craft to outpoint him if he doesn't get caught.