Whats your thoughts on Shane Mosley?

Stats are:

W 42 (36 ko's) | L 4 | D 0
KO percentage 85.7%
Age : 34

Notable fights won:
Oscar De La Hoya twice
Fernando Vargas

Titles:
IBF Lightweight title
IBA WBC WBA Welterweight title

Personal Note:
He is older so he is on the decline.
Hand speed is still ok although slight slower now.

Can he become a world champion again? What are your thoughts?