Travis Kelce is reportedly planning to propose to Taylor Swift on the couple’s “one-year anniversary in July,” RadarOnline.com has learned. In the latest development to come after Swift, 34, announced that she and Kelce, also 34, started dating earlier than initially thought, sources close to the couple revealed that the pair “discussed” a possible engagement and that “there is a plan.” “Taylor and Travis discussed it and there is a plan,” one insider told Page Six on Thursday. “They will get engaged on their one-year anniversary in July.” The insider also told Page Six that the superstar sing…