The Boston Celtics hold the Nos. 21 and 22 picks in Thursday's NBA draft, meaning they'll have an opportunity to add some role-playing prospects to their squad. According to Adrian Wojnarowski of Yahoo! Sports, one of those two players will be St. Bonaventure's big man Andrew Nicholson.

St. Bonaventure forward Andrew Nicholson is unlikely to get past the Boston Celtics at Nos. 21 and 22, but the Houston Rockets (Nos. 12, 16 and 18) and Denver Nuggets (No. 20), also have interest in him sources said.

So at the very least, he'll likely be off the board by No. 22. Nicholson is a 6'9 player with length, scoring abilities in the post, and an accurate shot beyond the three-point arc. He could be a good addition any team in the mid-to-late 1st round. ESPN's Chad Ford had previously reported that one of the Celtics' picks would go towards selecting Royce White, so we might already know their two selections.

However, Wojnarowski had one last tidbit about the Celtics' plans:

Boston is aggressively working to move up into the late lottery, if not higher, league sources tell Y!. Celtics own No. 21 and 22 picks.

— Adrian Wojnarowski (@WojYahooNBA) June 28, 2012

With the aforementioned interest by the Rockets and Nuggets in Nicholson, that upward mobility could be sparked by Boston's desire to make sure it gets its hands on Nicholson.