Corey Lewandowski had a $1.2-million offer from HarperCollins to write a book chronicling his time running Donald Trump’s presidential campaign, but the publishing giant backed away from the deal amid concerns about Lewandowski’s non-disclosure agreement, according to two sources familiar with the talks.Lewandowski, working through a California-based representative named Robert Stryk, began soliciting offers for a book, tentatively titled “Let Trump be Trump,” from multiple publishers in March, while he was working as Trump’s campaign manager, according to one of the sources, a Republican operative.