何なんなら

1. 1if you like ; if you prefer ; if it suits you ; if it's fine with you ; if you don't mind ; if necessary Translated by Jiyomi
2. 2if ... doesn't suit you ; if you don't like ... ; if ... doesn't take your fancy
3. 3what's more ; furthermore
4. 4if so ; if that's the case ; then

JMdict entry 2244400. Source and licence.