Giants VP wowed by McCarthy, admits pre-draft concerns over QB's 'maturity'

The New York Giants seriously considered drafting J.J. McCarthy out of college because they were wowed by his physical skills.

But McCarthy's development off the field over the past two-plus years also has impressed Giants brass, according to Chris Mara.

In a wide-ranging interview with the New York Post, Mara -- the brother of Giants owner John Mara and the team's senior vice president of player personnel -- discussed McCarthy's growth since being drafted by the Minnesota Vikings.

"We had him rated very high from a skill set. ... We weren't quite sure about the maturity level, but we loved his skill set," Mara told the Post, which published the interview Saturday. "He showed the ability to…