If they have a lot of OEG, then he's probably an OEG. The leggy look is because he's young and his type will change as he gets older and fills out more. His coloring is mainly silver duckwing.
I'd put more OEG girls with him, he'd make some pretty babies.
Is he a young bird? I suggested OEG X Modern because he's a little more slender and taller than an OEG would look like but not quite as leggy as a Modern.