But with the early-season departure of Montrell McDonald and Moore's suspension, Pelphrey doesn't have any other frontcourt options behind junior Michael Washington, freshman Michael Sanchez and senior Marcus Monk.
"I think Andre has made some progress (in practice) — certainly not leaps and bounds, but this is going to be big for him," Pelphrey said Monday on the Southeastern Conference coaches teleconference. "This could change his life. This could change his career.
"This could be the week where the light comes on for him, where he finds the understanding for what it takes to be a player and takes control of things from the personal side of it."
Clark, who was unavailable for comment Monday, has seen limited action in 11 of Arkansas' 16 games, averaging 2.8 points and 1.9 rebounds. Entering this season, Clark and Moore were both expected to challenge for minutes.
But more playing time has gone to Moore, a 6-9 New Orleans native who has appeared in all 16 of Arkansas' games this season. Moore, who will still practice with the Razorbacks, averaged 8.8 minutes, 2.2 points and 1.6 rebounds and ranked second on the team with nine blocked shots.
His arrest early Sunday morning has given Clark an opening. Clark has shown glimpses of productivity in three games this season. Clark had seven points and five rebounds against Florida A&M, eight and five against Texas Southern and 10 and five against Northwestern State.
"(Moore's suspension) is negative. It's disappointing for one young man, but it's certainly positive and maybe even exciting for (Andre)," Pelphrey said. "I tell these guys all the time, ‘You better be ready, your time is coming, you never know when it will come. It's your job to make sure you're prepared.'
"We're excited about this for Andre and to see what happens to him."
Auburn at Arkansas
When: 12:05 p.m.
Where: Bud Walton Arena, Fayetteville
TV: KHOG (Cox ch. 7, CoxHD ch. 707)
Radio: KEZA-FM 107.9, KKEG-FM 92.1, KUOA-AM 1290, FM 105.3
Records: Auburn Tigers, 11-6, 1-2 Southeastern Conference; Arkansas Razorbacks, 12-4, 0-3
Coaches: Auburn, Jeff Lebo (5th season); Arkansas, John Pelphrey (2nd season)
Series: Arkansas 23-13 (15-2 in Fayetteville)
Last Meeting: Arkansas beat Auburn 77-64 on March 8, 2008, in Fayetteville