It wasn't very surprising Tuesday night when Paul Pierce decided to opt out of the final year of his contract with the Celtics. And it's equally unsurprising to learn less than 24 hours later that the team expects to re-sign the 12-year veteran, this according to "multiple sources" close to Boston, reports ESPN's Andy Katz.

According to the sources, the Celtics expect the Pierce deal to be wrapped up sooner than later but free agent Ray Allen could take longer into the summer. The Celtics also have to decide what to do with free agents/reserves Tony Allen, Nate Robinson, Shelden Williams, Marquis Daniels and Brian Scalabrine.

As we've said before, this summer promises to be a busy one for the Celtics.