United boss Garry Monk is hoping to see his side maintain their positive momentum in Tuesday night’s EFL Cup Round Two tie away to Luton Town.

United travel to Kenilworth Road looking to build on four points from a possible six in their last two league fixtures – including Saturday’s impressive victory away to last season’s beaten play-off finalists Sheffield Wednesday.

Monk, a League Cup winner with Swansea City 2013, is eager for United to progress in the competition and build on recent results, but the head coach has also warned his side against underestimating their League Two opposition.

“We’re looking forward to the game," he said. "We know how difficult it’s going to be – we’ve already had a very difficult tie against Fleetwood and we have to expect the same, if not harder, on Tuesday.

“We saw in the last round how many Championship teams were knocked out and how difficult it can be in a midweek cup game. We have to be ready.

“We won’t underestimate them – they’re a very good side and they’re at home. It’s a difficult situation when you go away from home to play a team from a lower league in a cup tie.

“They have the motivation – like they showed against Aston Villa – with a good crowd behind them. We have to be ready for that.

“We showed it against Fleetwood and we came through a very difficult test. We have to be even more prepared and ready.

“But we’ve been showing improvements – it’s the responsibility of myself and the team that plays on Tuesday night to keep improving and trying to keep the momentum going. We’ll go there looking to try and put our best football on the pitch.

“You have to pick a team that you feel can contribute and win the game. You have to bear in mind all the factors – physically, mentally, tactically, technically – that you feel can do well in the game.

“It’s for me to judge – we have another training session on Monday morning – but we want to go down there and win the game.

“We’ll approach it to try and keep the momentum going that we have right now. We want to keep improving – whichever team we choose will have the responsibility of doing that.”