"Isak is the sort of player Arsenal genuinely need, but you would say everyone needs a player like him in their team right now, even Liverpool, and it is not just Premier League teams who will be trying to get hold of him either," Walcott told BBC Sport.
"Look at Real Madrid’s line-up at this moment in time. They go for these Galacticos and buy these incredible talents, but they sometimes put them in positions where they can’t quite do it. I would say that if you put Isak in that Real team then he moulds them together in a different way, where you might think they now look like a very well-balanced team.
"That’s the level he's at, and I can absolutely understand why all the very top teams would want him."