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These two players are among the best strikers in Europe on their day.
Wayne Rooney has been at the centre of attention during his near decade at Old Trafford, winning plaudits for some of his match-winning performances and sensational work ethic. But over the last 12 months, something hasn't seemed right with the striker.
He's seemed disillusioned with life at Manchester United, and outgoing boss Sir Alex Ferguson brought things to a head after his final home game as manager last month when he claimed via the BBC:
I don't think Wayne was keen to play, simply because he has asked for a transfer
Since then, speculation about Rooney's future has been in doubt. Will he stay at United or will he end up at Chelsea or PSG? It's entirely up to Wayne at this stage. He's already asked for a transfer once before, and he was persuaded to stay. Will David Moyes be able to do the same, or will he cut his losses with the seemingly unsettled striker and move to replace him?
Let's face it, no one player is bigger than United and if Rooney is unhappy with the way things are, maybe a fresh start would be best for all concerned?
If Rooney does leave, then a mooted replacement for him would be Borussia Dortmund's in-demand Polish striker Robert Lewandowski. The Pole has been in excellent form for the German side in recent seasons and at the age of just 24, he has his best years ahead of him.
But much like Rooney's future, Lewandowski's is uncertain too. The striker is out of contract next summer, yet his current club seem hell-bent on keeping him for another year at the risk of losing him for nothing in 12 months time.
Although Lewandowski is an important player for Dortmund, surely the club wouldn't cut off their nose to spite their face and risk him walking away without commanding a transfer fee for him next summer?
These strikers find themselves in strange, strange situations right now, but if United were to replace Rooney with Lewandowski, they may find themselves with a happier player who can offer them the best years of his career.