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Whichever coach gets Colin Kaepernick has some work to do

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Kaepernick has ability to pressure 49ers for trade (1:32)

John Clayton breaks down the leverage 49ers QB Colin Kaepernick has to get San Francisco to trade him to the Broncos, as well as how long he sees this process taking. (1:32)

SANTA CLARA, Calif. -- Colin Kaepernick was in the house Monday for the first day of the San Francisco 49ers’ first offseason training program under new coach Chip Kelly, a source told ESPN's Adam Schefter.

But that does not mean he will be with the Niners come training camp or, with a trade, with the Denver Broncos for the start of their offseason program come April 18.

No matter who is paying for Kaepernick’s services, much work needs to be done with the quarterback. Will it be Kelly doing the tinkering or Broncos coach Gary Kubiak and general manager John Elway?

Consider: While Kaepernick is considered a mobile quarterback, he worked last season to improve his pocket play.

It did not take. At all.

Per ESPN Stats & Information, Kaepernick's Total QBR of 39.0 in the pocket was the second-worst in the NFL last season, and his sack percentage of 10.1 in the pocket was the highest in the league. In fact, his Total QBR in the pocket has fallen every year, from 77.6 in 2012 to 68.3 in 2013 to 65.1 in 2014 to last year’s bottoming out. Accordingly, his sack percentage in the pocket has gone up, from 5.5 percent in 2012 to 6.1 percent in 2013 to 8.6 percent in 2014 to last year’s league-high mark.

Getting out of the NFC West might be good for Kaepernick, who took beatings at the hands of the Arizona Cardinals, Seattle Seahawks and St. Louis Rams last year. He had a 12.7 Total QBR in those games, as opposed to a 65.8 Total QBR against his five other opponents.

In going 0-3 against the NFC West, he did not throw a touchdown pass … for the 49ers. He did throw a pair of pick-sixes against the Cardinals.

The differences were stark: Kaepernick averaged just 117.7 passing yards per game against the NFC West and 210.3 against others. He had a 0-4 TD-interception ratio in the division and 6-1 against others.

Plus, the Broncos do not play Kaepernick’s Kryptonite -- the Seahawks -- next season. Kaepernick is 1-5 against the Seahawks with a Total QBR of 16.6, and he has never had a single-game Total QBR higher than 28.6 against them, with two touchdown passes (zero in the past three meetings) and seven interceptions.