Are the Celtics back in the running to return to the finals along with Lakers/Heat?

I'll be the first one to say, that last year I thought they were to old and never would go deep into the post season. I'm going to say it again. Celtics core is to old to make another run like they did again. The East has gotten a lot better, and celtics will have to work even harder to stay with the pack. With the addition of Shaq, plus KG, Perkins, and O'neal....the celtics are now the slowest team in the NBA.