Speaking to The Times, Walsh said: "I’ve been asked several times in the last few years about them. They are incredible footballers.
"The Spanish are one of the best possession teams in the world. Aitana’s an incredible player, but if you try to nullify her, Patri’s been one of the best players at this tournament. So you can focus on Aitana, then you’ve got Patri, Alexia and Mariona [Caldentey]."
Speaking about Bonmati's goal against Germany, Walsh added: "The way she let the ball go through, most players in that position wouldn’t even think about shooting and automatically cross. But I’ve played with Aitana a lot and know that she’s always thinking about things that other players don’t. She will have looked where the ’keeper was and tried to place it. It was a fantastic goal."