Sancho has been a revelation in the Bundesliga since his surprise move from Manchester City in 2017, scoring six goals and assisting seven for Dortmund.
Chelsea have reportedly accepted a bid of around £35million from Bayern for Hudson-Odoi and the 18-year-old forward is seriously considering the move after witnessing Jadon Sancho's meteoric rise in Germany. "In my opinion, we need two players", he said. Just love the game and the rewards will come.
If you look at it logically Chelsea's financial plan makes sense, because they can buy a proven player who has more than 100 appearances for Borussia Dortmund for less than £60m and sell a player an unproven one for nearly £40m.
"He is one of the best (young players) in Europe", Robben told beIN Sports.
Bookmakers believe there is a real chance that both William and Hudson-Odoi could leave.
Meanwhile, Maurizio Sarri has been critical of Bayern's methods in attempting to unsettle the Englishman and convince him his future lies in the Bundesliga. First, you have to take the big step to achieve it.
"He can do better because the potential is higher but he is really very important for us and it is impossible to lose him in January", said Sarri.
"He's a very mature lad for his age, he knows what direction he's going in and he's improving all the time".
The former Napoli boss said: "I think that it's not professional, because they are talking about a player under contract with Chelsea".
I think as football fans we must also change our narrative because we obsess about giving young players an opportunity but then when they get one, because we want instant success as well, the first thing we did is question if they're good enough! "So they didn't respect our club, I think", Sarri told reporters on Friday.
"Then it depends on the club decision. I am very, very happy with the player because the player is improving".