A senior Maharashtra Navnirman Sena (MNS) leader on Thursday said his chief Raj Thackeray would consider an alliance with the Shiv Sena (UBT) only if a concrete proposal is put forward, noting previous overtures from his party for a tie-up were met with "betrayal", reported news agency PTI.

Speaking to reporters in Mumbai, MNS leader Sandeep Deshpande referred to party president Raj Thackeray's recent interview where he signalled openness to have discussions with the Shiv Sena (UBT), headed by his estranged cousin Uddhav Thackeray, for a political alliance.