Not that I've found or heard of.
How old is he, by the way?
He may not like YOU, but may be fine with the females. Totally different deal. And yeah, leo mating always looks pretty rough & rugged, but that's life.
How big are the girls?
If he's old enough and the girls are of proper size, just do a test run. If either are too young/light, don't bother.
Sorry to be repetitive...
1) What do you mean by "aggressive"?
2) How old is he?
3) Have you tried to intro. him to females and he's still very aggressive??
4) How old & how heavy are your females you wish to pair him with?
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Too many Leos
1.0 feline "Spot"
0.1 canine "Tika"