The Posh travel to Stamford Bridge for what is surely one of the most fascinating ties of the third round on Sunday (kick-off 3pm).
Luke has held down the number one spot at the League One club since linking up with them on loan in August and, to date, has played 23 games, kept five clean sheets and saved three penalties, one of which came in last month’s 2-0 second round replay victory over Notts County.
Speaking to us ahead of his side’s big test against the Blues, the 20-year-old stopper admitted: “It’ll probably be the biggest game I’ve played in on a competitive basis but I’m really looking forward to it.
“They’re a great team, everyone knows that, and whoever they put out we’ll know all about them, but it’ll all be down to how we play.
“For me, I think it’ll be beneficial to see how far I’ve come along and get a gist of where I am in my development by playing against a top Premier League side.
“I know all the boys are looking forward to it, I’m sure we’ll give a good account of ourselves and hopefully get something out of the game.”
During his formative years, Luke studied the performances of a number of top-level goalkeepers in order to hone his craft, while he continues to appreciate the talents of the custodians across the Premier League – including Chelsea’s Thibaut Courtois.
“Growing up, I loved watching the likes of Iker Casillas and Edwin van der Sar,” he explained. “The amount of games they played and how consistent they were over a long period of time was always great to watch and now with Courtois at Chelsea – what he’s done considering his young age is unbelievable and he’s now one of the best keepers in the world along with obviously Hugo (Lloris). Whoever plays this weekend, I’m sure it will be a great occasion.”