The Republic of Ireland international striker will remain with the Premier League side until February 25th.
Keane told Villa’s official website: “I’m delighted to be back in the Premier League. This is only short term, of course, but there has been a lot of speculation over the years linking my name to Villa and, finally, I’m here.
“I’m excited about it and I know I’ll really enjoy my time here. It’s only for two months but I will do my absolute best in these two months.
“Villa is a great club, a club with a massive tradition and standing in the game and Villa Park is one of the finest stadiums I’ve ever played in.
“If selected to play on Saturday, I will genuinely be looking forward to it and I’ll be excited to be involved again in Premier League action.
“I’ve been training with the players here for the past few days and it’s been great but I’m not naive enough to think I’ll just walk straight into the team.
“If I can help and contribute to the overall effort of the team then hopefully I will be of benefit to Aston Villa. That’s my aim.”
