subject to contract(может быть указано в шапке как проекта договора, так и другого документа, напр., письма с изложением предлагаемых условий договора Евгений Тамарченко)
carry no legal weight(Though it carries no legal weight, the proposal could garner support: It comes as the city is undertaking an ambitious expansion of the metro system, with Mayor Sergei Sobyanin's administration announcing last month that 150 kilometers of new track and 70 new stations will be built by the end of 2020. TMT Alexander Demidov)
