With the UFC looking to "move the needle" and boost sagging PPV buys, and Brock Lesnar being a guy who will go where the money is, it's no surprise that talk of the WWE champion's return to the MMA world is hotter than ever leading up to Wrestlemania 31, when his WWE contract is widely believed to expire. Could Lesnar make a second run in MMA and be successful? Sure, as long as he's healthy, trains right, and finds the proper training camp (after all, Death Clutch, the camp that included Lesnar, Bellator heavyweight champion Cole Konrad, and UFC heavyweight Pat Barry shut down, and all three men are currently retired from the sport of MMA). However, how much of the Lesnar return talk is smoke and mirrors, and are there any signs that he could legitimately return to the sport he once dominated? Most media pundits believe that now more than ever there's fire behind all this smoke. In previous years, a slow news day would see a "Lesnar to the UFC" article dragged out, but it seems as if there's a little more substance this time around. Have the stars aligned? Will one of the biggest stars in UFC history return to the promotion in 2015? Here are five signs Brock Lesnar's return to MMA is imminent.