Marvin Lewis: Vontaze Burfict will rehab all through the summer

The Bengals signed linebacker A.J. Hawk as a free agent and drafted Paul Dawson in the third round of the draft, giving them a pair of options to plug into the lineup in the event that Vontaze Burfict’s return from microfracture surgery keeps him sidelined into the regular season. Those options may come in handy.…