记录报：本菲卡冬窗策略明确，未引援前不会卖出两位潜力新星（记录报：本菲卡冬窗方针已定，未完成引援前不出售两名潜力小将）

Paraphrasing news headline

The user provided a news headline in Chinese about Benfica's winter transfer strategy. They might be looking for a summary or a rewritten piece based on that headline. Since I can't browse, I’ll create a brief article from what they've given me. I'll mention that Benfica won't sell two promising young stars until they've secured replacements in the upcoming transfer window, based on the information from the outlet Record. I'll keep it concise and factual!