Lampard's side take on Bayern Munich in Germany on Saturday in the rescheduled second leg of their Champions League round-of-16 tie.
"I don't know the full extent of the injuries, but I know its the hamstrings with Azpi and Christian", he said at his post-match news conference.
They do not have to wait long either before returning to action, and Pulisic is hoping that he will soon be back in contention.
Gabon worldwide Pierre-Emerick Aubameyang scored a brace to give them their 14th cup crown, which is a record in the competition's history.
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The Premier League said last week that the 2020/21 season would start on September 12 and run until May 23, 2022. It's a good base for the future, I was very pleased with his performance".
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However the new border restrictions will prevent players from flying home to Sydney between matches. From Saturday at 1am, no one travelling from Greater Sydney will be allowed into Queensland.
"Even in a worst-case scenario, we don't go through against Bayern, the 12th feels too early for me for the players to start playing again".
A comeback is very unlikely after the 3-0 loss at Stamford Bridge back in February, but Chelsea players will not have their summer break until August 9 at the earliest.
Chelsea manager Frank Lampard has appealed to the Premier League to delay Chelsea's start to next season over injury concerns.
Pleased by his boy's heroics at Wembley, Aubameyang's father who played 80 worldwide video games for Gabon throughout his profession stated the African nation and his household take pride in him.
Despite ending his first domestic campaign in charge of Chelsea on a dispiriting note, Lampard was keen to hail the season as a success on the whole, with the Blues securing Champions League qualification for next season despite being placed under a transfer embargo before the start of 2019-20.