GREEN BAY, Wis. -- It wasn’t quite the ultimatum that he gave Eddie Lacy at the end of last season, but Green Bay Packers coach Mike McCarthy was firm enough in his message Wednesday that he wants his running back to take his conditioning seriously this summer.

While the Packers seem pleased with Lacy’s approach this offseason, which included extensive daily workouts with P90X founder Tony Horton, they don’t want him to revert to old habits when players are dismissed at week’s end and will be on their own until training camp opens in late July.

“I hope he definitely goes with the plan that he used this year as opposed to last year,” McCarthy said Wednesday before the penultimate practice of minicamp.

“He's just like all of our guys. Our strength coach [Mark Lovat] and nutritionist [Adam Korzun], we have programs for our guys. There's communication on where they're going to work, who they're going to work with. There's a lot of great programs out there, and there's relationships that we're involved with some of those guys. All of our players need to take care of business over the next five weeks.”

At this point, it’s unclear if Lacy will join up with Horton again. Lacy has not been available to reporters during the first two days of this week’s minicamp, but the workout guru told ESPN.com last month that he would like to train with Lacy again this summer. This offseason, Lacy lived with Horton in two different locations -- Jackson Hole, Wyoming, and Los Angeles.

“Ideally, what I’d like to do -- he’d have to be in L.A. for it to work -- but I’d like to see him play [basketball] one day, [go to] boxing class one day, and I could work with him for three as opposed to six or seven like before,” Horton said last month. “It would give him more freedom, and the beautiful thing is he wouldn’t have to relearn everything again. I would really love the plyometric day, and the cardio was essential for him.”

Horton detailed their workouts for ESPN.com last month. Their work began in February, less than a month after McCarthy said Lacy “cannot play at the weight he was at [last] year.” When Lacy reported for the Packers’ offseason program in April, he had lost 15 to 18 pounds since the end of last season, which put him in the 240-range.

In his first -- and only -- public comments since, he said on May 24 that he believes he “held up his end of the bargain.”

However, McCarthy indicated that Lacy’s work might not be done.

"Eddie will be fine," McCarthy said at the time. "I believe he'll hit the target that we're all looking for when the lights come on."