"His challenge is to start and play well for Sale. If he does that on a consistent basis he'll be considered like everyone else," Lancaster told BBC Sport.
Cipriani - who joined the Sharks from Melbourne Rebels over the summer - featured in Sale's 34-33 win over Cardiff Blues, impressing Lancaster in the process.
"I'm lucky, I coached Danny a lot before he went to Australia and he worked with me in the Saxons," Lancaster added.
"When I spoke to him out in Australia he said the priority is to come back and play well in the Premiership. It was great that he came on and made a difference [on Sunday] and great for Sale to get that win."
Cipriani has seven England caps to his name, winning his last with a substitute appearance against New Zealand in November 2008.