Blues skipper Terry was ruled out with a hamstring injury while vice-captain Lampard had to undergo a hernia operation following their 2-0 victory over Stoke at Stamford Bridge at the end of August.
However, they appear to be recovering from their setbacks quickly, with Terry likely to play a part, while Lampard will be assessed further before a decision is made whether he will make the squad to face his former club at Upton Park.
"Lampard had surgery on Tuesday and I think that he will start to train this week," he said. "I don't know when but we will see how he trains and we will take a decision for the game against West Ham.
"Terry didn't have surgery but he used the last week to improve his hamstring.
"He will start to train with the squad this week, maybe Tuesday, and I think he will be able to play against West Ham."