Burlap shouldn't be much of a problem for the tree, since it's porous and will break down over time (though I generally remove it when I plant). The wire basket and/or twine, on the other hand, is a far more serious issue - the "professionals" should have removed it prior to planting the tree. Nylon twine and metal baskets will not break down fast enough to keep from damaging the tree as it grows, leading to health issues and, most likely, an early death. Of course, trees are tough, but so is Colorado. Sounds like they were either lazy or inexperienced (at least that's what one professional website says - they would recommend digging up the tree and replanting it (properly) in winter or early spring (probably after the leaves have fallen in late fall/early winter or before the new growth begins in early spring here in Colorado). As for chlorosis, the tree's health might be influencing how chlorotic it is, especially if the roots are being severely constricted, but maples (well, most maples) and chlorosis seems to be an eventuality in Colorado soils regardless of how well it is planted. A good arborist should be able to help with the tree's nutrition and environment, but you'll probably have to dig the tree up to determine its root health (and, if necessary, to fix it). Disclaimer: I'm not an arborist, just a plant nerd. I do know that a healthy root system is critical to a healthy (and long-lived) tree.