The Dallas Mavericks acted faster than Speedy Gonzales to ensure their frontcourt retained a young talent suited to play alongside Cooper Flagg. In a direct response to an aggressive free-agency strike by the reigning champion New York Knicks, the Mavericks’ front office didn’t wait 48 hours to decide on Moussa Cisse. Although he had accepted an offer sheet from the Knicks, the Mavs refused to lose one of their most promising young defensive anchors.

Less than 12 hours after ESPN’s Shams Charania revealed that Cisse had agreed to the Knicks’ offer sheet, he confirmed that the Dallas Mavericks had matched the New York Knicks’ offer. The newly crowned champs, who lost Mitchell Robinson in free agency, had presented Cisse with a two-year, $4.7 million offer sheet.

As a restricted free agent, Dallas had to match the offer if they wanted to keep Moussa. They moved swiftly, effectively nullifying the Knicks’ attempt to get another big.

The update, confirmed by Cisse’s representatives Yann Balikouzou and Kevin Bradbury of LIFT Sports Management, highlights a swift turnaround by the Dallas franchise. The 6-foot-11 center signed the Knicks’ offer sheet earlier on Saturday, but Dallas exercised its matching rights well before the league’s 48-hour deadline.

So when he originally signed the Knicks’ sheet earlier on Saturday, the Mavericks chose to officially match the deal well before the strict 48-hour Monday deadline, retaining his rights instantly. The deal also keeps Cisse in Dallas on a standard NBA contract after he spent his rookie campaign on a two-way deal.

This swift decision completely alters the offseason landscape for both franchises. New York had already added Andre Drummond, but was still searching for another young rim protector after missing out on other veteran center targets, making Cisse an attractive option.

Previously, the Knicks attempted to take advantage of their luxury tax exceptions by tendering a two-year minimum contract to Cisse, hoping to secure a primary replacement for Robinson. The deal reportedly includes a partially guaranteed first season and a non-guaranteed second year, making it a low-risk investment for either team.

New York targeted Cisse’s elite physical tools to provide essential rim protection behind Karl-Anthony Towns while continuing to develop his long-term upside.

However, because offseason rosters are allowed to stretch to 21 players during the summer months, veteran insider Marc Stein noted that Dallas held the flexibility to match the contract without forcing any immediate roster moves.

They matched the Knicks’ aggression and simultaneously ensured maximum roster continuity around their franchise cornerstone, Cooper Flagg.

While Cisse and Flagg remain early in their partnership, Dallas clearly views the young center as an ideal defensive complement in the frontcourt. Cisse anchored the paint across 38 NBA games while the versatile top pick projects as the kind of defender who can impact multiple positions.

The 23-year-old big man has continuously outpaced his developmental timeline in the NBA G League with the Texas Legends, where he posted stellar averages of 14.8 points, 13.3 rebounds and 2.6 blocks per game. He carried that momentum into his rookie NBA season, averaging 4.5 points, 5.7 rebounds and 1.2 blocks in just under 14 minutes across 38 appearances.

Keeping Cisse in Texas provides critical frontcourt insurance while the Mavs continue evaluating the futures of veterans Daniel Gafford and Dereck Lively II, with Morez Johnson Jr. also expected to factor into the rotation.

One additional implication of Dallas matching the offer is that Cisse cannot be traded without his consent for one year, nor can he be dealt to the Knicks during that period under NBA rules.

For Dallas, the decision preserves a young, high-upside shot-blocker uniquely suited to grow alongside Flagg for the foreseeable future. Meanwhile, the Knicks are forced back to the drawing board in their search for additional frontcourt depth after another pursuit came up short.