Lampard has nothing but good things to say about the young pair, who are reportedly on the summer shopping list of megabucks rivals PSG.
The England schemer, 34, said: "They're great lads. Both of them are very unassuming and both are performing brilliantly.
"They are not the sort to let their heads go into the clouds, like we have seen a lot of lesser talents do.
"These two are top talents with a top attitude and this season Eden has put himself into the top bracket of world football.
"But I don't leave Oscar out of that group either after what he did last season having just arrived from Brazil and what he's doing again this season.
"I'd put the pair of them in that top bracket of player already - and they can take it as far as they want."