Bank of Montreal is reportedly leading a group of underwriters launching a $2.55 billion loan to back the previously announced acquisition of Canadian payments processor Nuvei.The loan will have a seven-year term and will help fund the$6.3 billion leveraged buyout led by Advent International, management, Novacap and CDPQ, Bloomberg reported Monday (July 8), citing unnamed sources.The proposed loan would be the biggest such deal since April, when a $2.6 billion loan was sold to fund KKR’s purchase of a Broa ...