David Culley can NOT save the Texans' relationship with Deshaun Watson ... 'cause despite Houston agreeing to hire the new head coach, the team's superstar still wants out.
The quarterback made it clear this month, according to multiple reports ... officially demanding a trade from the org. just a few months after signing a 4 year, $156 MILLION contract extension with the team.
And, because of a no-trade clause in his deal, Watson will now get to pick where he's shipped off to if Houston's brass ultimately relents to his demands.
The issues between the 25-year-old and the Texans are well-documented at this point .