The Turkey international is in line to start for United's Premier League opener against Arsenal this weekend as Andre Onana works his way back from a hamstring injury.
Bayindir played in United's 1-1 draw with Fiorentina on Saturday, making a save in the home team's triumphant penalty shootout.
"Yeah, it's a good feeling," Bayindir told MUTV after the game. "Very good feeling, when you can save from the penalty, when you're feeling you can help your team, it's a great feeling.
"For us, it doesn't matter which team we will play," Bayindir continued. "Every game is important in the Premier League. This week, we will work for Arsenal, and then from the Arsenal game, step by step for the next game, we will prepare ourselves."
On their preseason, the Turk added: "If you want to be a team, you have to be all players, all staff, together. You have to work, everyone together.
"In America, we did these things. We're still doing these things; everyone together.
"At the moment, we have very good energy. We want to keep this energy."