Hudson-Odoi, 20, scored five times and registered five assists in 37 appearances across all competitions for Chelsea last season.
The Chelsea winger played more regularly in the Premier League when Tuchel first arrived at Stamford Bridge following Frank Lampard's dismissal.
However, Hudson-Odoi was left on the bench for Chelsea's Champions League fixtures after the round of 16.
The England international was heavily linked with Bayern Munich in the previous transfer window, but Chelsea turned down a staggering £70m bid for Hudson-Odoi.
Abraham scored 12 times and picked up six assists in 32 appearances last season, but he has since fallen out of favour under Tuchel.
The 23-year-old striker found himself featuring more regularly under Lampard, but he failed to make the Chelsea squad for the finals of the Champions League and FA Cup.
Abraham, whose current Chelsea deal expires in 2023, has been linked with Premier League clubs West Ham, Aston Villa and Arsenal this summer.
Former Chelsea man Johnson now expects that the Blues will sell both Abraham and Hudson-Odoi this summer.
The 36-year-old told BettingOdds: "I think if they get the right offer for Callum Hudson-Odoi or Tammy Abraham this summer, then they will sell them. Definitely.
"Regarding Callum, it's just not clicking for him, is it? He's in and out the side and I don't think the manager thinks that he can rely on him.
"He's sensational when he wants to be but you can't survive in the Premier League by performing when you want to. You need to perform week in, week out. I don't think he has the type of mentality that you need to work under Thomas Tuchel.
"I think he will go on to have a fantastic career, but he needs to find the right club to flourish."
Featured Image Credit: PA
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