Sheffield United's David McGoldrick has spoken about his fitness routine and how it helps him stay in top shape. The striker, who has been linked with a move away from the club, says he has built a gym in his house and spends two hours a day working out. McGoldrick, who turns 39 in November, says he gets itchy feet after two or three days if he doesn't work out. He says his gym is his safe place and that he loves it. McGoldrick has been with Sheffield United for several years and has been a key player for the club. He has scored 18 goals last season and still has plenty to offer. McGoldrick says he is happy with his lot and wishes he had known about the importance of fitness when he was younger. He says he tries to tell young players about the importance of living a healthy lifestyle and training regularly. McGoldrick's comments come as he prepares to leave Sheffield United at the end of the month. His contract officially finishes at the end of the month and there have been discussions about him extending his stay. However, there is also interest in his services from elsewhere.