Michael Strahan's agent contacted several teams in the offseason to determine their interest in either trading for the Giants defensive end or signing him if he were to be released, two sources told the Daily News yesterday. Agent Tony Agnone, with Strahan's blessing, placed calls, mainly in March and April, to teams they believed were in position to make a Super Bowl run, one source said. The idea was that new surroundings would rejuvenate Strahan. Certainly, Agnone felt he could also do better than the $4 million Strahan is scheduled to make this year with the Giants. One source said Agnone got mixed results from the teams he contacted, and when he reported back to Strahan to let him know there was some interest, Strahan backed off, wanting to finish his career as a Giant and protect his "legacy" by playing for only one team. Strahan never demanded the Giants trade or release him.