That the Knicks made a late attempt to sign free agent center Andrew Bynum before he joined the Pacers Saturday indicates president Steve Mills still would like to land a legit backup center for Tyson Chandler by the Feb. 20 NBA trade deadline.

The Knicks, who face the moribund Bucks Monday at Bradley Center, are still concerned with their big-man depth and durability. Amar’e Stoudemire and Kenyon Martin returned for Saturday’s 106-91 loss to the Heat and Metta World Peace is allegedly healthy too after platelet rich plasma therapy. But all three are major injury risks with chronic issues.

The Knicks’ key trade chip for a big man remains combo guard Iman Shumpert. But after watching LeBron James and Dwyane Wade pick apart the Knicks’ defense Saturday with Shumpert sidelined by a sprained shoulder, it makes you wonder if the Knicks can afford to give up on the former Georgia Tech defensive dynamo.

“Iman’s a big part of what we do from a defensive standpoint because we can match him on either Wade or LeBron, and not having him [Saturday] hurt,’’ Knicks coach Mike Woodson said.

The Knicks could face the Heat in the first round of the playoffs in a 2-vs.-7 showdown and Tim Hardaway Jr., for all his 3-point scoring grace, has defensive deficiencies.

Saturday’s stomping was humbling for the Knicks, but Chandler thinks they still have enough to make up a lot of ground in the final 34 games. Chandler even chattered about rising to the third seed. Of the Knicks’ final 34 games, 17 are against teams with losing records.

“Obviously we didn’t come in expecting to put ourselves in this situation,’’ Chandler said late Saturday night. “But on the bright end, this is the kind of year where that’s the case for a lot of teams. I feel like it’s still wide open. I looked at the standings, and I feel like we’ve got a real opportunity to kind of shoot up to that third spot and try to get ourselves in the mix.”