It's been some time now since we saw anything of Frank Lampard, who has been kept out of four straight friendlies with a niggling Achilles problem. That sounds worse than it is -- Chelsea only played against the Singha All-Stars two and a half weeks ago -- but it'd probably be good to see him back in action as soon as he's ready, if only for him to get some work in this pre-season.
Before the 2-0 win over Inter Milan, Jose Mourinho said that Lampard would probably be out for the next two games, which means he should be available following the AC Milan game later on Sunday. And, indeed, that schedule looks like it's going to happen, with Lampard returning to full training with the rest of the team (he'd been doing solo work) on August 3rd.
Now that he's training, it's probably time to stop worrying that this injury is going to linger. The Chelsea staff are absolutely right to be as cautious as possible with a 35-year-old player, but this doesn't look like anything that will last into the season.