Bale will return to Spurs after seven years away in Spain.
Pleat said, "He's been a talisman, he's done superb things for his country, and there's been a lot of international players, particularly on the advice of their manager, who've held out from international call-ups and have claimed injury or claimed unavailability in some way. They've been persuaded by their managers not to go and have a hard week of another international.
"Bale's always been available and it's great for him and for Wales really, that he's always been there for the national team."
He also told BBC Radio: "The supporters, certainly early days, will absolutely welcome him, they'll be thrilled with his return and of course it's up to him then, the ball's in his court. He has to go out there and do the business.
"I did think at one stage that it wouldn't be possible that he would come back. Now he's there and it just gives Tottenham that extra forward strength. They certainly need it.
"They haven't had a player who's been happy to come to Tottenham really and sit on the bench and be a kind of cover for Harry Kane and this gives [Jose] Mourinho a chance to use Bale as a striker, as a lead man, as the man that sometimes gets a bit isolated up-front, and I think that could be quite exciting if he plays games down the middle, as such, because he's got that searing pace. I'm looking forward to seeing him."