Everton star Tim Cahill is excited by the young players coming through at the club.
The lack of serious transfer activity - young defender Eric Dier, on loan from Sporting Lisbon, is the only new face at the club so far - means Moyes is likely to dip into his pool of young players over the coming season.
Cahill told the Liverpool Echo: "The manager always brings the young players through.
"Tolos (Vellios) has all the right attributes. He showed the type of performance he can put in, the work-rate he can put in.
"Ross Barkley has come back to fitness, he is strong, he is sharp, he is fit. For me, I tip him to be a real up and coming player.
"Connor has impressed me just as much because he is a finisher.
"The other good thing is they are well-humbled kids. They really enjoy being around the first team, they have great attitudes.
"It has been fantastic for them to be a part of the squad in pre-season, because professionalism is something that they need for the future at a football club like this."