Where?In what way has he not made it clear? He's refused their contracts and reportedly said he's intent on joining us.
What you mean is he hasn't publicly announced his desire to leave and burnt all bridges. Which is a completely different, and usually unnecessary part of the process. I'm pretty sure he'll join us as soon as Lemar or Mahrez go to Arsenal which should be pretty soon.
IF this transfer goes through you will see a transfer similar to Sterling. Sanchez will have to work for it.