Near Rhymes (Similar ending sounds):
* Ratio
* Patio
* Portfolio
Eye Rhymes (Look alike, but sound different):
* Marcato
* Virtuoso
* Zero
Loose Rhymes (Vaguely similar sound):
* Clio (Greek Muse of History)
* Brio
* Trio
Wordplay:
* "Cue" him to fight (using "cue" as a verb and referencing Mercutio's famous "Queen Mab" speech)
Ultimately, the best rhyme depends on the context and desired effect of your writing.