Brussels is preparing to offer Keir Starmer a key concession in talks over an agricultural deal, giving the beleaguered prime minister an important victory in his efforts to move closer to the EU. European officials have conceded that the UK can keep its ban on live animal exports as part of any joint deal on food and agricultural products, according to sources on both sides of the talks, even though the EU has not imposed such a ban. The carve-out will be a significant fillip for Starmer’s efforts to negotiate closer EU ties in a series of areas including emissions trading and youth mobility. The prime minister listed his prospective EU deal on Monday as one of three examples of his government’s progress, as he fights for his political career in the face of growing calls from his own MPs for him to quit.…