Lennie told the Echo
"Danny won't play against Tranmere Rovers tomorrow and he is no better than 50-50 for Friday's match at Queens Park Rangers. If he doesn't make that - and the odds are against it - he won't play in the LDV Trophy tie at Bournemouth or the FA Cup second round should we make it to that stage. He will be having intensive treatment and our main target is to get him ready for Bristol City at home.
"Danny has hamstring problems and they take some weeks to remedy. He has been to see specialists about his back and we won't be rushing him. The trip with Wales last midweek did him no harm at all, but I want him 100 per cent before he plays. If he suddenly made rapid progress and was available at Queens Park Rangers on Friday that would be good, but I'm certainly not banking on it."