Jim Goodwin names the 'big thing' Dundee United must rapidly improve onThe United boss was frustrated as his side slumped to a disappointing defeat to KilmarnockView Image Dundee United boss Jim GoodwinJim Goodwin has warned his Dundee United players that they need to tighten up when it comes to set-plays. ‌The United boss was left frustrated as his side lost 2-0 against Kilmarnock, with Robbie Deas scoring from a back post set-play. Goodwin is a big fan of Davie Martindale and the rebuild he has done since their relegation. “He’s very well organised and a really good coach, so we know if we send anyone there they will be well looked after. “The Championship is a good, competitive league with some really good teams who have invested a lot so it’s very competitive.