HendoStrandedBrain Traysers
The French youth teams have been highly competitive at all recent tournaments. The strength and depth of their national pool is incredible - for Olise to get a call up here is very impressive (or they are doing it as a low cost way of swaying his final decision on eligibility in case he turns into a star)
It is great for the lad but should be noted that most teams, including France, do not send anything near their strongest squads to Toulon given that is just an invitational tournament. Good experience for him and a chance to show that he could break into the fuller squad.
You say that but this squad Southgate took in 2016 was pretty strong.
Goalkeepers: Angus Gunn (Manchester City), Jordan Pickford (Sunderland)
Defenders: Calum Chambers (Arsenal), Ben Chilwell (Leicester City), Brendan Galloway (Everton), Kortney Hause (Wolverhampton Wanderers), Dominic Iorfa (Wolverhampton Wanderers), Jack Stephens (Southampton), Matt Targett (Southampton)
Midfielders: Lewis Baker (Vitesse Arnhem, loan from Chelsea), Matt Grimes (Swansea City), Nathaniel Chalobah (Napoli, loan from Chelsea), Ruben Loftus-Cheek (Chelsea), John Swift (Chelsea), James Ward-Prowse (Southampton)
Forwards: Jack Grealish (Aston Villa), Kasey Palmer (Chelsea) Nathan Redmond (Norwich City), Duncan Watmore (Sunderland), Cauley Woodrow (Fulham)
Yep that is a strong squad but the picking a weak squad comment is normally true as Toulon takes place every year and is always sandwiched by more important tournaments.
Toulon is actually an under 21 tournament, though this year it is an Under 22 competition - France are sending their u18s as their u20s are in the World Cup - England are sending an u20 side as the u21s are in the Euros - Portugal sending U19s. It's not a FIFA affliated tournament and games only last 80 mins rather than 90.
So whilst it will be great experience for Olise, it is the perfect competition for France to take a look at a player who may have only just come on their radar in what is a prestigious but ultimately meaningless end of season competition.