In-form Teddy, 35, was named in Sven Goran Eriksson's squad to face Greece in the crucial World Cup qualifier at Old Trafford on Saturday.
England need to win to book their place in the finals in Japan and Korea.
Les, who has spearheaded our attack alongside Teddy in our last four games, believes Teddy is playing as well as ever and sees no reason why he shouldn't stay in the squad, if all goes to plan, for next summer's finals.
Speaking this morning, Les insisted: "Teddy's been playing that well this season and I've said a couple of times, people who get into the England squad should so so via their form. Not only that Teddy's been through it before, is playing well and deserves his call up.
"He's come back to the club and produced everything everyone expected of him, perhaps even more.
"He's played in these games not only for England but for Manchester United. He knows what it's like going into these big games and how people will be feeling. His experience will be invaluable."
As for making the finals, Les continued: "If he continues in the same vein he's started the season in then there is no reason why he should be on that plane to Japan and Korea in the summer.
"We'll be keeping our fingers crossed for him and hoping we can perform well as a team because if we do that, it will help Teddy cement his place."
Les Ferdinand is delighted his team-mate and strike partner Teddy Sheringham has been recalled to the England squad.