The Cubs expected the deadline deal-making to pick up Wednesday, and they’ve delivered on the expectations, getting close on a deal with the Boston Red Sox for disgruntled left-hander Felix Doubront and reportedly heating up with several teams on talks involving a trade of switch-hitting infielder Emilio Bonifacio.

A source confirmed the Cubs are close to finalizing a trade for Doubront that would send a player to be named later to Boston.

Doubront, 26, is 2-4 with a 6.07 ERA in 17 appearances this year, including 10 starts.

Doubront has been public with his displeasure over a demotion to the bullpen late last month, and Boston media outlets Tuesday night suggested he seemed disinterested during his worst outing of the year – when he got just two outs and allowed six runs on two walks and six hits to the Blue Jays.

“I don’t think he’s disinterested,” Red Sox manager John Farrell told reporters after that game. “He’s capable of more. We know that.”

Doubront reportedly had asked for a trade.

On whether Doubront was letting his displeasure affect his performance, Farrell told reporters Tuesday night: “I would hope not. … There are others that have moved ahead of him in the rotation, and opportunities present themselves coming out of the bullpen. He’s been effective in the past coming out of the bullpen. If the role is not sitting well and affecting his pitching, then there needs to be a different focus to realizing his potential and capabilities.”

Like, perhaps, a different locale?

Doubront did not speak with reporters after that outing, according to at least one report.

The non-waiver trade deadline is 3 p.m. Thursday.

NOTE: The Cubs are expected to add Class AAA starter Chris Rusin to the bullpen for tonight’s game as insurance against a pen that pitched 12 of Tuesday’s 16 innings against Colorado. The corresponding move was not immediately clear – though a trade of Bonifacio could be used as a short-term roster solution.

Email: gwittenmyer@suntimes.com

Twitter: @GDubCub