I think so, if Chelsea are serious about competing for the Premier League, they need a really top striker, Liam Delap is good, but i doubt he is the striker you go in with if you want to win the league, and as for Jackson, he is so inconsistent, he could play well in one game and perform at that level again a month later.

That said, what are the options in the market for them if they want to get a top striker, i can't think of any right now.