A string of Championship clubs including Aston Villa, Leeds United and Sunderland are interested in the 23-year-old, who currently tops the League One scoring charts.
“A few of the lads mentioned I’d been linked with other clubs but I’ve just got to concentrate on myself and the team,” he said.
“Promotion, that’s key. We’ve the squad to do it.”
Marriott has hit 17 league goals this season plus four in other competitions.
He is only six months into his Peterborough career having joined the Posh from Luton Town on a four-year deal in June.
Marriott believes he has become a marked man but he is determined to continue his hot form.
He told The Sun: “I don’t get as much time as I did earlier in the season, which is standard when you have got someone who has scored a couple of goals.
“We do it with other teams, you want to make sure you have got the right people to occupy them and to take them out of the game.
“That’s where you have got to be able to adapt, you’ve got to be able to change your game to combat that.
“You can’t be predictable or else the games will pass you by, you’ll go missing and that’s not something I ever want to happen to me.
“I want to be able to make an impact in every single game. If some teams think I am going to do this or that, I’m going to change it.
“I’m going to make different runs, make different movements and constantly change my game to be able to adapt to whatever circumstances a game may bring.
“The manager gives me the confidence to go out there and play my game.
“We’ve worked hard on the training pitch, we’ve developed and improved other aspects of my game.
“They are working hard to add more strings to my bow.
“I’m constantly willing to learn otherwise you just stagnate.”