Maguire looks at home in a three-man central defence, after shining in the system for his country for many years, and he will hope to shrug off a knock in order to retain his place and face the Seagulls in the 17:30 BST kick-off.
"I think it was good for him to play with three centre-backs," added Amorim. "I think he feels more comfortable.
“Because he plays in the centre, he doesn't need to go to the side so much. So, sometimes, you help some players with the way you play. Sometimes, it's the opposite with some players. So, I'm really pleased.
"I think he's not young [32], but he can learn a lot. He can improve. I think it can be so much better with the ball, because he has that quality, and he needs to show that.
"Nowadays, with the set-pieces that you see, the amount of men that you put in the box, every cross from the opponents, and everyone is playing like that. He's a massive player for us, so I'm really happy, but he needs to continue. That game is in the past. That goal is in the past. Let's move forward to the present and the future."