Looking at who the Jays drafted in 2014, Pentecost is probably the only player who is old enough and high profile enough. If he hadn't injured himself and had been able to establish himself last year, he might have put himself in the discussion but that was before the Martin signing and even without Martin it would have been a longshot because Navarro would not have been an easy hurdle to clear. As it stands now, with Martin signed long term, there's just no reason not to take their time with Pentecost.
http://toronto.bluejays.mlb.com/team/draft.jsp?c_id=tor