Markov is probably the player I loved the most over the years and I actually own his jersey but if Washington are serious about trying to win it all fast and offer us a package like Kuznetsov + 1st round pick I would not hesitate and trade him.
I love our team this year but I want a dominant team for the next 10 years and we have some nice pieces (Gallyx2, Pacioretty, Subban, Price) but if in the next 2 to 3 years we can add up more it would make us a contender for years to come.
that's my 2 cent.
Yes, it depends on the package but a team will have to overpay for him.
Markov is still the second most important player on the team after Subban. People here underestimate his impact because apparently he is "old" and "slow" but take Markov out of the lineup and see the result. The team would not be in second and Subban would not be a PPG defenseman right now.
Nobody comes close (even Subban) to Markov's ability to retrieve the puck from the opponent and take it out of the zone.