Players like Prso and Drogba weren't prolific by a similar age.
I'm not saying that means Lammers will be good. I'm just saying that stats only tell a part of the story.
I think he looks like a technically gifted footballer, who is also physically decent. I also think he potentially has a high ceiling for a club like ours. I also think he will be more about his all round game than his goals.
However, I appreciate it's a higher risk signing because recent seasons stats suggests he's not been performing consistently at the level that his potential ability reflects.