The Miami Dolphins have been shopping for a running back for several weeks, and that includes conversations with multiple teams about doing a trade. And a league source tells me one of those teams the Dolphins have been talking to is the Kansas City Chiefs, who happen to have four experienced running backs on the roster.

The Dolphins had shown interest in all the Chiefs running backs -- Jamaal Charles, Charcandrick West, Spencer Ware and Knile Davis -- but it seems the one the Chiefs are most willing to part with is Davis. And Davis happens to be the least accomplished of the bunch.

Davis also happens to have requested a trade from the Chiefs because he finished the season third on the team's depth chart behind West and Ware and could be cut if Charles returns from 2015's season-ending knee injury to reclaim his starting job. Charles, who had knee reconstruction surgery, is expected to be ready sometime in training camp.

(One supposes KC has grown tired of Charles being injured so much and could want to move him, but someone would have to blow them away to make such a deal. I don't know that the Dolphins are in the blow somebody away mode right now).

The Chiefs today announced contract extensions for both West and Ware, suggesting the team intends to keep both.

“Charcandrick and Spencer both stepped in and were very effective for us offensively last year,” Chiefs General Manager John Dorsey said. “These guys have different styles and abilities, and together they provide us quality depth at the running back position.”

That leaves Davis as the player the Chiefs would be most willing to part with in trade.

Davis is a former 2013 third-round pick of the Chiefs whose size and bulk (5-10 and 227 pounds) and speed (4.4 in the 40-yard dash) have not yet translated to great NFL success. He rushed for 463 yards on 134 carries in 2014 for a 3.5 yard per carry average. Last season, Davis was little used, gaining only 72 yards on 28 carries. One of Davis's issues has been his penchant for fumbling. He had seven his first two NFL seasons in 2013-14.

He obviously was behind Ware and West on the depth chart after Charles was injured.

Davis served mostly on kick returns. He had a 108-yard kickoff return for a TD his rookie season and a 99-yard kickoff return TD in 2014. Last season he returned 24 kicks for 603 yards -- a 25.1 yard per return average.

If the Dolphins and Chiefs consummate a trade for Davis (big if) it would not be a blockbuster. The Chiefs are getting nowhere near their third-round draft investment in return for Davis.

Anyway, enjoy the highlight reel. Remember, this is about highlights. No lowlights included: