David de Gea has warned his Manchester United teammates that they will be provided with a stern test by Swansea City in the FA Cup tomorrow afternoon.

The majority of bookmakers have rated United as the favourites to progress through to round four of the competition at the expense of the Welsh side.

However, Spanish goalkeeper De Gea has admitted that even with the home supporters behind them, it will be a "tricky game" for United.

"It's always a boost to play at home because you have all the fans behind you so you feel like you have a lot more support in your favour. That said, we know Swansea are a tough side and it will be a tricky game for us," he told MUTV.

The Swans have never won at Old Trafford in 10 attempts.