The pair appeared at odds at the start of the season.
Riise told The Sun: "Me and Martin didn't have an argument. Players and bosses have disagreements.
"He sees me as a senior pro and respects my opinion. We had a disagreement - but in a good way. We lost against Liverpool and had a bad run. He wanted to give me a rest and let other players have a chance.
"They played well so it was hard for me to get back into the team. When you are in the team for a long time you can get complacent. You don't notice but your performance level can drop.
"When you are out of the side you do work harder. I lived in the gym.
"An hour before training and afterwards too. I bought a treadmill for my home and did extra running. I also do Yoga every night with my missus.
"Martin's door is always open. He enjoys a laugh. He is interested in your life, to know you are happy.
"He wants the team to get on well. We go out sometimes as a group on Champions League nights and have a meal and watch the game.
"I needed to come back to the Premier League. I missed it. After seven years with Liverpool I couldn't sign for another English club straightaway.
"But I love the game here. It suits me. You can run and fight all day.
"In Italy you could get a moment to stop and look around but in England if you do that you will get smashed."