January Trasfer Window

After yesterday's performance, I feel more confident that we can eventually stay above the 18th spot, but we still need to take advantage of the transfer window. What do people think we need the most? Who would you like to see us get? I said in another thread I really like Siggurdson and he cant be happy with the minutes he is getting at Spurs. We need a youngish solid center defender and probably a left back also.