(WSCR) When the Bears and Lions face off for a divisional rematch Sunday, one thing will look exactly the opposite from the first time these two teams squared off.

Instead of safety Chris Harris lining up with the Bears secondary, he will now take his place in the Lions secondary as their strong safety. Harris was cut by the Bears on Oct. 27 and was signed by the Lions the following day.

While reports have surfaced that Harris was giving information on the Bears to his new team, one NFL expert doesn’t think there is anything to be worried about.

“I’m not sure what great secrets Chris Harris is going to be able to reveal to Matthew Stafford and the offensive coaches for the Detroit Lions, but he’ll give it a shot,” Brad Biggs of The National Football Post and Chicago Tribune told The Mully and Hanley Show on Friday. “People always get up in arms about that type of activity, but the fact of the matter is, it happens across the league. If you go to a new team, and you end up in a game against your former team, if you’ve got any information that’s useful whatsoever, you share it. So be it. That’s the way it works. I don’t think that’s going to give the Detroit Lions any type of edge or advantage in this game. I’m not taking a shot a Chris Harris, there. He’s a bright guy, if there’s one guy you could take off the team and send him elsewhere and say, ‘Well, he’s a pretty smart guy, he might be able to help them out. I think Chris Harris would be in that group of players.”

LISTEN: Brad Biggs on The Mully and Hanley Show

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For Biggs, the key will be execution. Whether or not the Lions know what the Bears are going to do, if the Bears can execute, they’ll have success.

“It going to come down to execution,” he said. “In this case, it’s going to come down to the Bears eliminating the huge plays they allowed to the Lions the first time when they met up at Ford Field on Oct. 10. Detroit had three plays in that game that totaled 200 yards of offense. If you can eliminate that, I think the Bears have an excellent chance to win the games and forge a tie for second place in the NFC North.