Tampa, Fla. ? Jose Canseco is ready to raise his hand and take the oath voluntarily. Wary players and executives might not be given any choice.

Canseco, the MVP-turned-bestselling author, had no qualms about testifying before a congressional committee investigating steroids.

“We’ll be there on the 16th and 17th,” Canseco’s agent, Doug Ames, said Friday.

The House Government reform committee is prepared to subpoena witnesses for its hearing on March 17, a person familiar with its deliberations said on condition of anonymity.

Jason Giambi, Canseco’s former Oakland teammate, said it was “highly unlikely” he would testify before the committee, which on Thursday scheduled the hearing. Boston pitcher Curt Schilling was unsure whether he would appear and whether the hearing would be productive.

“It depends on what it’s for,” Schilling said in Fort Myers. “I mean, if this is a McCarthy witch hunt all over again, then no. But, again, I don’t know any of the specifics around what it entails, and what’s going on.”

Mark McGwire, who combined with Canseco to form the Bash Brothers on the World Series champion Athletics, also was undecided.

“We’re still evaluating,” McGwire spokesman Marc Altieri said. “I can’t say one way or the other.”

Baseball commissioner Bud Selig and executive vice president Sandy Alderson had not made their decisions, spokesman Rich Levin said, and San Diego general manager Kevin Towers declined comment.

The players’ association had not yet decided whether union head Donald Fehr would testify or what recommendation it would give to the invited players, according to union general counsel Michael Weiner.

A subpoena could present a sticky situation for Giambi, who was given limited immunity in 2003 when he testified before a federal grand jury investigating illegal steroid distribution.

“We think it’s a little early to talk about who’s confirmed their attendance,” said David Marin, a spokesman for Rep. Tom Davis, the Virginia Republican who chairs the committee.

At the Yankees’ training camp, Giambi said he had a brief conversation with his agent, Arn Tellem, about the invitation.

“I have no idea what they are trying to do,” Giambi said. “I’m just concentrating on playing baseball.”

In December, the San Francisco Chronicle reported that Giambi told the grand jury he had used steroids. Barry Bonds, who was not invited by the committee, told the grand jury he used a substance that prosecutors believe contained steroids, the paper said.