He scores a lot of goals but I don't think he's all that. By that I mean the type of goals he scores are in the range of most strikers. He used to be almost all unplayable at Dortmund as he could carry the ball, shoot off both feet from outside the box and had pace to burn. He does none of this for Woolwich, all bar a handfull of goals he’s scored have been straightforward finishes.
I get the dilemma, when you have a goalscorer in your side don't get rid as the new guy might be goal shy (this is common for a lot of clubs looking for a goalscorer). But given his age and wage and contract length demands I’d cash in and invest. I think Martinelli can take his spot, he absolutely brings a greater work ethic and energy than him and I'd say it's worth waiting for him to allow to develop by giving him minutes.