Gerald Herbert/Associated Press

Jacoby Brissett is the Indianapolis Colts' starting quarterback for now, though the team may be seeking his successor as soon as this offseason.

According to Ian Rapoport of NFL.com, "Expect the Colts to be in the quarterback market, perhaps significantly, in the draft to bolster the position."

Brissett, 27, has had his ups and downs this season after being thrust into the starting role following Andrew Luck's surprise retirement, throwing for 2,661 yards, 18 touchdowns and six interceptions while completing 62.3 percent of his passes. He led the Colts to a 5-2 record to start the season, throwing for 1,590 yards, 14 touchdowns and just three interceptions.

But his play has cooled, and so have the Colts, going 1-6 since. Brissett has thrown for just 1,071 yards, four touchdowns and three interceptions in that span. In three December games, he's completed 56.4 percent of his passes.

His quarterback rating has also steadily declined throughout the season:

September: 102.1

October: 95.2

November: 80.5

December: 78.4

For the season, his quarterback rating sits at 90.9 (16th). His QBR is 51.5, 20th at the position.

It's clear that Brissett's play has declined, and with the Colts out of the postseason picture, the team can use the last two games of the season to experiment, as head coach Frank Reich told reporters this week.

"We have two games—that's really an opportunity for him to work to get better," he said. "But really for [offensive coordinator] Nick [Sirianni] and I and the rest of the offensive staff to say, 'Hey, we've got two games. Might we try a couple things, experiment with one or two things? Let us learn, let us learn Jacoby."

He added that the changes would likely be subtle:

"Maybe there's something that we haven't been doing that is good for him, so we'll look at some alternative schemes, introduce one or two new thoughts in the next two weeks. Not major things. You're probably not going to notice it just by the eye, but it could be a philosophical thing, it could be small little sudden things we do in the way we call our plays, the way we check our plays."

The Colts inked Brissett to a two-year, $30 million extension in September ($20 million guaranteed). Still, don't be surprised if they draft his potential successor this offseason.