I'm pretty sure he's supposed to. He gets faced with a lot of situations where he's defending a single attacker on a breakaway. The 1st priority seems to be staying on feet and slowing down the break so support can get back, and to not under any circumstances go in and miss, resulting in a situation like the Lukaku one in the home game.
He could still be more aggressive but I think he's improving, it's just not going to be overnight.
Yeah fair enough, I just think ( with hindsight mind ) that he should've engaged Sigurddson sooner to not allow him set himself.