Colak averages 0.9 goals per 90 for a bloody start.
Dessers scored more goals in Serie A than Shankland managed in the Belgian league, so i think he will be fine as well.
And regardless of anything you think you know. Historical performance is irrelevant when they come here because you have no bloody idea how they will be utilised and if the argument that "Shankland will score more for us, because we create more chances" holds weight; then it also holds weight for Dessers and Lammers coming from strugglers to a team who will absolutely dominate possession and create vastly more chances than theyve been used too.
How about actual patience instead of jumping in 2 footed on something its painfully clear you know nothing about?