Clifford is familiar with Howard, having coached him for six seasons as an assistant in Orlando and Los Angeles.
"I know what he has to do to play well," Clifford said Wednesday. "He understands that I know him. I know his game. Being around him in different settings I have a feel for what he likes to do. ... There is no reason he can't get back to playing at a really high level."
General manager Rich Cho said Clifford's familiarity with Howard is a major reason the Hornets pulled the trigger on a trade that sent guard Marco Belinelli, center Miles Plumlee and the No. 41 pick in the NBA draft to the Atlanta Hawks in exchange for Howard and the No. 31 pick. It meant taking on Howard's contract, which will pay him $47 million during the next two seasons.
Now the question becomes if Howard, 31, can bounce back from two tumultuous seasons in Atlanta and Houston, and also fit in in Charlotte.
Howard was an NBA All-Star eight straight seasons from 2007 to 2014. But Howard didn't play in the fourth quarter of two of Atlanta's first-round playoff games last season, something that irked the 13-year NBA veteran. Atlanta dealt Howard to Charlotte just one year into a three-year, $74 million contract.
While Clifford acknowledges that Howard isn't as athletic as he once was, he said the 6-foot-11, 265-pound center will bring defensive toughness and physicality -- something the Hornets woefully lacked last season while finishing 36-46.
Howard is the NBA's active leader in shots blocked and rebounds.
He's also a three-time NBA Defensive Player of the Year and has been selected to the NBA All-Defensive team five times.
"For three years when people looked on the schedule and saw we're playing Charlotte on Wednesday it was like, 'Oh man that's not going to be easy,'" Clifford said. "But last year, in the last 25 games, it was easier. And we're not going to win that way. Dwight can go a long way toward changing that back to the way it was."
Howard was not present at the news conference Wednesday at the Hornets' arena and has not commented on the trade.
However, Howard spoke with team owner Michael Jordan on Tuesday night and indicated that he was "pumped up" about joining the Hornets, Cho said.
Howard wasted little time Tuesday night changing his Twitter profile picture to the Hornets' logo.
On Wednesday, Howard tweeted a thank you to the Hawks and their fans.
Clifford doesn't buy into the notion that Howard is a locker-room cancer who can be a disruption to his teammates. Having coached him for six seasons, Clifford said he thinks Howard will be welcomed in Charlotte and fit in nicely.
"Listen, this is an easy guy to like," Clifford said. "This isn't some guy who is hard to deal with. He's bright, he's fun-loving and has a great sense of humor and great wit. ... I think he will fit in very well."
Howard, the No. 1 overall pick in the 2004 NBA draft, has averaged 17.5 points, 12.7 rebounds and 2 blocks in 954 career games played. Howard's 58.5 shooting percentage ranks fourth all time in NBA history and he is coming off a season in which he made a career-high 63.3 percent of his shots.
Howard has appeared in 95 postseason games, averaging 18.4 points, 13.8 rebounds and 2.5 blocks per game.
The Associated Press contributed to this report.