I like Lovenkrands a lot but even in his better days, he doesn't do much more than a static Carroll. And I know which one of the two is easier to play against.
As for Ameobi, the guy is a horrible injury prone confidence player.. Like, I've said before, he might score the odd goal but he'll never form a remotely decent partnership with anybody, because he's usually too busy to play within and against himself. 10 years of complacency is enough - goodbye.
Even if he comes back and scores 20 goals till the end of the season, I'd still sell him at the first offer.. same goes for Nolan