According to his Twitter account, Mayhem definitely looks forward to fighting Jacare but isn't avoiding Shields.
Attn Jacare: you RAN from me in Dream and made me CHASE you to Strikeforce for less money. When we meet, you'll regret it.
Attn everyone. I have never ducked anyone. Look at my record- I have an irrational lack of fear, or concern about losing.
Both would be fun! Skilled guys that will let me prove my skills RT @madymyheart who would you rather fight Jacaré or Shield's?