Canseco posted on his Twitter page yesterday that the FBI was about to visit his house, then said he had received a subpoena to appear before the grand jury “about roger clemens,andrew pettite and others’’ on April 8.

Pettitte has acknowledged taking human growth hormone and told congressional investigators that Clemens informed him a decade ago that he used HGH.

Canseco wrote in a 2005 book that he introduced several players to steroids and performance-enhancing drugs. But the slugger has said he has no knowledge of Clemens using drugs.

“Its like the godfather,’’ Canseco said in a later post, “when I thought I was out they drag me back in. And now it begins again.’’

Reyes was diagnosed in early March with a hyperactive thyroid, and doctors prescribed rest and a change in diet. He was told to refrain from physical activity and was monitored and tested weekly in New York.

After missing most of last season with a hamstring injury, Reyes was pulled from stretching before what would have been his spring training debut March 5.

That makes it possible Lee won’t be ready when the season starts April 5 at Oakland.

Lee and manager Don Wakamatsu both said Lee’s brief, light morning throwing session on flat ground went well, and Lee said the muscle feels much better. But he added “I still feel it.’’