East Lansing — Since April 10, when Caleb Swanigan said he was committing to play next season at Michigan State, the Spartans have been waiting on a signed national letter of intent.

It appears the letter will not come, at least not to Michigan State.

Sources confirmed on Thursday that Swanigan has decommitted from Michigan State, news that was first reported on Twitter by ESPN and

The two other schools that were in the thick of the recruiting when he first announced he would attend Michigan State were California and Purdue. Both will likely be back in the mix now that Swanigan has pulled away from the Spartans.

Messages to Swanigan's guardian, Roosevelt Barnes, were not returned on Thursday.

Chris Johnson, Swanigan's coach at Fort Wayne (Ind.) Homestead, said he has not spoken with Swanigan in several weeks and did not know why Indiana's Mr. Basketball changed his mind.

"I wish I had the answers," Johnson said. "It's too bad. I don't understand what's going on. When you're dealing with kids you just wish them the best. I hope he makes good decisions and he gets around people that can lead him the right way."

Barnes played football at Purdue, which leads some to believe the Boilermakers have an edge in landing Swanigan. But he was recruited heavily by Cal, which is coached by former Purdue standout Cuonzo Martin, who is friends with Barnes.

Jaylen Brown and Ivan Rabb, two of the nation's top recruits, have also committed to California since Swanigan's announcement, another factor that could be influencing his decision.

On Wednesday, Michigan State coach Tom Izzo didn't sound concerned. He was asked directly about Swanigan's status, even though he can't comment on a recruit until they have signed

"I really can't talk about it, but we're kind of going through a little bit of a thing, football's been through it," Izzo said on "The Drive with Jack Ebling" on 92.1-FM in Lansing. "So, nothing I'm worried about, I just can't talk about it."

The football issue Izzo was likely referring to was in 2014 when Southfield's Malik McDowell committed to Michigan State but his mother, Joya Crowe, refused to sign the letter of intent. Months later, she finally did sign and McDowell enjoyed a solid freshman season.

Whether a similar issue exists with Swanigan, the 6-foot-8 center who lives in Fort Wayne with Barnes, is not known. He committed to Michigan State on April 10 and the top-10 prospect in the nation gave the Spartans a top-10 class.

Michigan State's class has three signed players, including Michigan's 6-8 Mr. Basketball Deyonta Davis (Muskegon), 6-5 shooting guard Matt McQuaid (Duncanville, Texas) and 6-5 wing Kyle Ahrens (Versailles, Ohio).

Transfer Eron Harris of West Virginia will also be eligible to play and the decommitment from Swanigan means one scholarship is open. Michigan State has been mentioned by Missouri sophomore forward Johnathan Williams III as a possible destination.