^ Well look atTrego and Gibbs as a player. Gibbs has played in IPL, Big Bash league. Even now when he is not exactly in his prime people still want him in their team. As for Trego who exactly knows him? I never heard of his name until last CLT20. Trego and Gibbs probably have completely different set of mindset/standard. While Trego might see BPL as a place where he can earn some extra money, Gibbs will see it as it's not worth the trouble for him, he still has other options.
"I was the happiest man in the world, happier than Bill Gates"- Tamim Iqbal