Henderson-Thomson announced

Josh Thomson was supposed to be in the final stretches of

preparing to fight for the UFC lightweight championship next month,

but with titleholder Anthony Pettis injured and facing the prospect

of surgery, Thomson has moved on to the next best available

matchup.

That happens to be the man who held the belt before Pettis,

former champ Benson Henderson. The two will face off in the main

event of a UFC on FOX show scheduled for Jan. 25 at the United

Center in Chicago.

Dana White announced the pairing late on Saturday night.

Thomson returned to the promotion in April, becoming the first

man ever to knock out Nate Diaz, pulling off the trick with a head

kick and punches in the second round of their bout.

Prior to that, Thomson (20-5 1 no contest) had last competed in

the UFC in 2004, going 2-1 during a brief run. He would later go on

to win the Strikeforce lightweight championship.

Henderson (19-3) will be attempting to regain the form that

brought him to the top of the division and kept him there for three

successful defenses. The 30-year-old lost his belt to Pettis in

August via armbar, ending his seven-fight win streak.

The appearance on FOX will mark the third time in his last four

bouts he appears on network TV.

The event will mark the third consecutive year the UFC visits

Chicago in January. The most recent event in 2013 drew over 16,000

to watch Demetrious Johnson successfully defend his UFC flyweight

championship with a decision over John Dodson.