Bueno was reassigned to minor league camp Thursday, Carrie Muskat of MLB.com reports.

Bueno was one of 12 players cut by the Cubs on Thursday. The 34-year-old lefty was a non-roster invitee and will probably spend most of the year with Triple-A Iowa.

The Royals declined to tender Bueno a contract, Andy McCullough of the Kansas City Star reports.

Bueno simply wasn't worth keeping for the Royals, who have an embarrassment of riches when it comes to bullpen arms, even at his pre-arb price. The 33-year-old lefty posted a 4.18 ERA, 1.33 WHIP and 20:7 K:BB in 32.1 innings with the big club in 2014.

After posting a rough 10.57 ERA in August, Bueno has opened September with three consecutive scoreless appearances.

Other than that brief rough patch, Herrera has been effective in middle relief for the Royals this season. If his August numbers were excluded, the 33-year-old lefty would have just a 2.25 ERA on the season. Nonetheless, Bueno remains too far down the pecking order for save opportunities to warrant much fantasy consideration.

Royals activated LHP Francisley Bueno from the 15-day disabled list.

Bueno missed nearly two months of action with a sprained left middle finger, but he's ready to go after nine rehab appearances. He'll be stationed in middle relief for the Royals.

Francisley Bueno (finger) will begin a minor league rehab assignment this weekend.

Bueno landed on the disabled list last month with a sprained left middle finger. The 33-year-old allowed two runs on three hits over his first two appearances.

Francisley Bueno (finger) resumed throwing Tuesday.

Bueno was placed on the 15-day disabled list on April 7 with a sprained left middle finger. The Royals are hoping to get him back by the end of this month.

Royals placed LHP Francisley Bueno on the 15-day disabled list with a sprained left middle finger.

Bueno and Tim Collins both struggled in Sunday's loss to the White Sox and now they're both on the disabled list. Left-hander Donnie Joseph and right-hander Michael Mariot will replace them on the active roster.

Royals recalled LHP Francisley Bueno from Triple-A Omaha.

Bueno appeared in one game for the Royals earlier in the season, tossing 2 1/3 scoreless innings of relief. The veteran southpaw will add depth to an already strong Royals' bullpen.

Royals optioned LHP Francisley Bueno to Triple-A Omaha.

Bueno had been designated for assignment, but he cleared waivers and will remain in the organization. He returns to a 2.93 ERA and 1.32 WHIP at Triple-A.

Royals designated LHP Francisley Bueno for assignment.

Bueno was called up on Thursday and appeared in one game with the Royals. The 32-year-old seems likely to pass through waivers unclaimed and remain in the organization.

Royals purchased the contract of LHP Francisley Bueno from Triple-A Omaha.

He'll take Danny Duffy's place on the active roster. Beuno made 18 appearances for the Royals last season and owns a 2.93 ERA and 47/20 K/BB ratio over 58 1/3 innings this season in Triple-A.

Royals sent LHP Francisley Bueno outright to Triple-A Omaha.

The 32-year-old left-hander passed through waivers unclaimed and will continue to work out of the bullpen at Triple-A Omaha. He's posted a 3.40 ERA, 1.44 WHIP and 39/16 K/BB ratio over 45 innings this season.

Royals designated LHP Francisley Bueno for assignment.

Bueno had a 3.40 ERA and 39/16 K/BB ratio through 45 innings this year at Triple-A Omaha. The 32-year-old lefty may draw interest from other teams on waivers.

Royals optioned LHP Francisley Bueno to Triple-A Omaha.

Bueno, 32, appeared in 18 games as a reliever for the Royals last season, posting a 1.56 ERA and 1.04 WHIP in 17 1/3 innings. He should be back up at some point.

Francisley Bueno was reinstated from his suspension on Wednesday September 12.

Francisley Bueno on Sunday will begin serving a two-game suspension stemming from an incident during the 2008 season.

Bueno, who was then with the Braves, was found to have intentionally thrown at the head of Alfonso Soriano in an August game. He had the suspension reduced from three to two games after appealing.

Royals recalled LHP Francisley Bueno from Triple-A Omaha.

Bueno, who has allowed two runs on five hits in 4 2/3 innings of relief this season in the major leagues, takes Jose Mijares' spot on the roster and will assume the same specialist role.

Royals optioned LHP Francisley Bueno to Triple-A Omaha.

He was bumped to make room for the recently-acquired Jeremy Guthrie. Bueno has allowed two runs on five hits in 4 2/3 innings of relief this season in the major leagues. He'll be brought back up eventually.

Royals optioned LHP Francisley Bueno to Triple-A Omaha.

Bueno allowed one run on three hits over two innings during his brief stint with the big club. The 31-year-old southpaw will return to a 2.85 ERA in 41 innings at the Triple-A level. Everett Teaford was called up to take his place on the active roster.

Francisley Bueno is appealing a three-game suspension from an incident stemming from 2008.

The Royals purchased Bueno's contract on Saturday, but his promotion is viewed as a temporary measure, and he'll likely be replaced in the next few days. According to the Kansas City Star's Bob Dutton, a hearing with MLB won't be scheduled until next week, so the suspension is in abeyance until the appeal is heard.