Despite all the defensive signings, I reckon we still need a big commanding central defender to partner Anderson, someone who will win every header and won't be easily brushed off the ball. Every team in the league seems to have at least one of these types of defender, and we don't have any.
Unless we sign McNamara as a left back, we'll need one of those too. Foster has done ok, but I don't think he's good enough to command a first choice starting 11 place in the team for the season ahead.