Shelvey was sent off early in the second half for standing on Alli during Tottenham's 2-0 win.
Alli said, “We knew it was going to be a physical game. It's not an easy place to come. It happens sometimes.
"I'm sure he'll be disappointed. it was important we stayed professional. I don't want to talk about it too much. I've had a few talks with the gaffer in the past [about his temperament]. I've been pulled up for my temper before but today we had to keep our cool. There was no need to react today."
Tottenham defender Kyle Walker-Peters told Sky Sports he learned yesterday that he would be making his Premier League debut.
"I found out yesterday in training before we worked on tactics and shape work. I was a bit nervy, nerves are good though. A few of the boys tried to tease me about it.
"Playing here, it's a fantastic stadium. Most importantly we got the three points."