Theo Walcott was plucked from Southampton and has become a top player. Arsene Wenger has often said he's not a fan of doing business in the January transfer window, when prices are inflated and few top players are available. And yet the Arsenal manager has often managed to find squad reinforcements he considered worth picking up midseason. Here's a look at some of Wenger's most memorable January signings -- for better or worse. Theo Walcott Walcott is one of many teenage prospects who have joined Arsenal in the January window but has gone on to become by far the most successful. The speedy forward signed from Southampton as a 16-year-old for an initial fee of £5 million that...
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