Some reports suggest a thigh strain? Never had one myself so couldn't tell you how long it takes to get over that. I had a dead leg that James 'Winky' Kavanagh gave me at school one lunchtime but I was right as rain within an hour or so....
I recall a time some years ago when Sheffield Wednesday had no option but to take Paul Warhurst out of central defence and stick him upfront. He then scored 12 goals in as many games and got an England call-up too. Over to you Dunky...