Don't let the name fool you. Football Manager Classic 2015 isn't an old version of the somehow-popular series of soccer/football coaching titles. You're not in for a nostalgic dose of pixelated graphics (in this case, that's what the regular entries are for). Football Manager Classic 2015 hits Google Play with 3D visuals, more players, and more languages. In short, it's closer to the PC version of the game.
Football Manager Classic 2015 supports less hardware than the most recent Football Manager Handheld. It only runs on what the developer considers high-end tablets. Note that while devices such as the NVIDIA SHIELD, Nexus 9, and LG G Pad 3.8 GPE are supported, the 2013 Nexus 7 is not. Check out the full list of devices to see if your tablet is compatible.
The developer has provided this chart to show other ways in which Football Manager Classic differs from its lightweight counterpart.
Football Manager Classic goes for $19.99, twice the price of the handheld version. Both contain extra features tucked away as in-app purchases.