Done Please help with the sentence in red

[stlwright]

センセイー2年の茂木見なかった?
Sensei, Have you seen sophomore student, Mogi?
し。。。
N...
知らないけどどうしたの?
No, I haven't. But what's the matter?
話があるから教室にいろって言ったんだけど逃げられてさあ。。。
I need to speak with him, so I told him to stay in the classroom, but he ran away...
茂木君何かしたの?
Did Mogi-kun do something?
いやあ。。。あいつ今フリーだから付き合ってもらおうかと思って。。。
Well...He's free now, so I plan to ask him to go out with me...
無愛想なのは置いといて//アイツルックスだけは良いからね
To put it bluntly//Only his looks are good.

無愛想なの=blunt
置く=to put, place, leave behind
とく=to do something in advance

 

[Boon0175]

Hi, stlwright.
Please don't separate 置く from とく, it's a colloquial form of 置いておく (setting aside).

My proposal is
Setting his bluntness aside, Only his looks are good. (literal)

I hope it helps you.

 

[mikkih]

無愛想なのは置いといて//アイツルックスだけは良いからね
To put it bluntly//Only his looks are good.

It's a single sentence.
置いといて＝置いておいて＝別にして
だけは：at least
He's not very friendly, but he's (definitly) good-looking at least.