It doesn't seem that AVB is.
Obviously none of us know what his 'brief' was when he was appointed and what targets have been set, but I think he's now said on a couple of occasions that the title is in reach (see http://www.sport360.com/article/tottenham-looking-different-options-adebayor-demands-derail-move).
Hopefully he's talking from a position of confidence and knows the players who are still to be brought in before the start of the season (or at least before the end of the transfer season).