William washed up? The same William who was on the pitch playing for Brazil vs Argentina two days ago? Or who was on the pitch for Brazil during the summer when they won the copa America. He has made over 30 appearances in each of his last 5 seasons at Chelsea and he captained the team in their last league game.
Barca and Juventus are linked with signing him for next summer but Lampard had been singing his praises for his off the ball intensity, something you yourself said Wilson struggles with, and wants him offered a new contract. Not only would Wilson not get in ahead of William but he would be behind Pedro also.
For James vs Wilson there is a debate to be had but James is rated higher with the international team.
At Bournemouth I am interested to see what happened when Brooks returns as it appears Wilson place in the team is the only one up for grabs for him.
'Willian' has had mixed seasons overall in his tenure with Chelsea. Appearances alone don't dictate performance levels. He has had some good seasons and some bad ones and regardless of his temporary form, he is 31 now and is a wide player whose pace is expected to diminish significantly as has been the trend for quick players playing wide, which matters because his main traits are pace and his technique on low crosses/distance shooting. If captaining a side is a huge achievement, then isn't Ashley Young Man United's captain? Says zilch about the quality of the player.
Also, the regulars in attack for Brazil in Copa America were Neres, Everton, Firmino and Jesus (he was selected wide ahead of Willian). Willian played a grand total of 87 minutes in Copa America all games put together, which is the equivalent of 1 game really.
Wilson at 22 is no slouch, scoring for Wales and is a regular for them.
The fact that Juventus were interested in Willian says nothing. They were interested in the likes of Can and Rabiot, who're warming the bench, with Can playing here & there. They're playing an aged Khedira more regularly than one would imagine. Same applies to Barcelona. They got Malcom a year ago and see what happened there.
Regardless, he isn't the future. Wilson is one of the future, just like the other young players Lampard has preferred this season.