The 54-year-old replaced Louis van Gaal as United's boss in 2016 and last season he won both the EFL Cup and Europa League as well as the Community Shield.
Petrosyan said: "I think Henrikh can do very well in the Premier League".
With the win, Mourinho maintained his 100% record of winning every major European Cup final as a manager.
Manchester United played a couple of years ago at Yeovil [in January 2015] and they know the difficulties they felt.
If a club or an individual player receives three strikes in a 12-month period, they are deemed to have committed an anti-doping violation.
Casey Affleck pulls out of Oscars presenting role
In the midst of the #MeToo movement and Time's Up, the allegations against Affleck have come under increased scrutiny. Two women who worked on the film filed sexual harassment lawsuits against him in 2010.
United are now second in the Premier League, behind runaway leaders Manchester City, with the club still in the Champions League and FA Cup. He has now put pen to paper on a new contract that will see him stay at Old Trafford at least until 2020, with an option for a further year.
He said: 'Sometimes I feel little bit unfair, it's a bit hard for other industries around the game to give us credit that sometimes we deserve.
ARSENE WENGER SAYS Arsenal are responsible for an administrative error which saw Alexis Sanchez miss a drugs test before completing his move to Manchester United. "We got one of the best-attacking players in the world and he's very important for us because we want the best possible players". "Mourinho's teams are strong and aggressive, so we have to match that, but as long as we have that concentration, I expect us to put in a really good performance..."
When asked if he'll face Swansea, Wenger added: "I haven't decided yet".
"You can not do that with 11 players, it is impossible, so the players in big clubs know the squad is 20 something where everybody wants to play. That was my initial contract; we have now made the decision to make it clear for everyone that it's not for three, it's for four or five and, who knows, more".