The Janata Dal (United) will hold its national executive meeting in Delhi on Friday. The meeting has been convened amidst speculation that Chief Minister Nitish Kumar could take over the reins of the party from Lalan Singh. His deputy and RJD leader Tejashwi Yadav has rubbished the resignation rumours of JD(U) president Lalan Singh. But the BJP has alleged that there could be some trouble in the Bihar opposition alliance.