Dundee United wait on news of Benjamin Siegrist's injury

<div class="pa_art"><p>Dundee United are awaiting news on the severity of Benjamin Siegrist's injury after a training-ground issue kept him out of a 1-0 Tayside derby victory against St Johnstone.</p><p>Former Motherwell goalkeeper Trevor Carson made his debut after Siegrist suffered a knee injury just ahead of the final week of the transfer window.</p><p>When asked about Siegrist's injury, United head coach Tam Courts said: "We're not entirely sure, but in training with nobody near him he picked up an injury which will keep him out longer than just days, shall we say.</p><p>"We don't know the diagnosis yet but he'll be sent for a scan."</p><p>Northern Ireland international Carson made a good save from Glenn Middleton towards the end of an . . .