Actually, he only promised 20. 2 down, 18 to go... actually, it we roll with the strikers we have now, he stays healthy, and we buy a couple nice pieces for the flanks (LB & winger)... 16-20 goals is not out of the question at all. Didn't he have 14 the first season with us?
Edit: Checked Wiki, says 12 in league, 2 in Europe for 14 in 44 total.